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Updated HTML docs
This commit is contained in:
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58f5ece91b
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1000 changed files with 39106 additions and 33861 deletions
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@ -51,18 +51,16 @@
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<span class="c1"># See C source code for _functools credits/copyright</span>
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<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'update_wrapper'</span><span class="p">,</span> <span class="s1">'wraps'</span><span class="p">,</span> <span class="s1">'WRAPPER_ASSIGNMENTS'</span><span class="p">,</span> <span class="s1">'WRAPPER_UPDATES'</span><span class="p">,</span>
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<span class="s1">'total_ordering'</span><span class="p">,</span> <span class="s1">'cmp_to_key'</span><span class="p">,</span> <span class="s1">'lru_cache'</span><span class="p">,</span> <span class="s1">'reduce'</span><span class="p">,</span> <span class="s1">'partial'</span><span class="p">,</span>
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<span class="s1">'partialmethod'</span><span class="p">,</span> <span class="s1">'singledispatch'</span><span class="p">]</span>
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<span class="s1">'total_ordering'</span><span class="p">,</span> <span class="s1">'cache'</span><span class="p">,</span> <span class="s1">'cmp_to_key'</span><span class="p">,</span> <span class="s1">'lru_cache'</span><span class="p">,</span> <span class="s1">'reduce'</span><span class="p">,</span>
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<span class="s1">'partial'</span><span class="p">,</span> <span class="s1">'partialmethod'</span><span class="p">,</span> <span class="s1">'singledispatch'</span><span class="p">,</span> <span class="s1">'singledispatchmethod'</span><span class="p">,</span>
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<span class="s1">'cached_property'</span><span class="p">]</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="kn">from</span> <span class="nn">_functools</span> <span class="kn">import</span> <span class="n">reduce</span>
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<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
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<span class="k">pass</span>
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<span class="kn">from</span> <span class="nn">abc</span> <span class="kn">import</span> <span class="n">get_cache_token</span>
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<span class="kn">from</span> <span class="nn">collections</span> <span class="kn">import</span> <span class="n">namedtuple</span>
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<span class="c1"># import types, weakref # Deferred to single_dispatch()</span>
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<span class="kn">from</span> <span class="nn">reprlib</span> <span class="kn">import</span> <span class="n">recursive_repr</span>
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<span class="kn">from</span> <span class="nn">_thread</span> <span class="kn">import</span> <span class="n">RLock</span>
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<span class="kn">from</span> <span class="nn">types</span> <span class="kn">import</span> <span class="n">GenericAlias</span>
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<span class="c1">################################################################################</span>
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@ -139,6 +137,8 @@
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<span class="k">def</span> <span class="nf">_le_from_lt</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">,</span> <span class="bp">NotImplemented</span><span class="o">=</span><span class="bp">NotImplemented</span><span class="p">):</span>
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<span class="s1">'Return a <= b. Computed by @total_ordering from (a < b) or (a == b).'</span>
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<span class="n">op_result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="fm">__lt__</span><span class="p">(</span><span class="n">other</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">op_result</span> <span class="ow">is</span> <span class="bp">NotImplemented</span><span class="p">:</span>
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<span class="k">return</span> <span class="n">op_result</span>
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<span class="k">return</span> <span class="n">op_result</span> <span class="ow">or</span> <span class="bp">self</span> <span class="o">==</span> <span class="n">other</span>
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<span class="k">def</span> <span class="nf">_ge_from_lt</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">,</span> <span class="bp">NotImplemented</span><span class="o">=</span><span class="bp">NotImplemented</span><span class="p">):</span>
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@ -179,6 +179,8 @@
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<span class="k">def</span> <span class="nf">_ge_from_gt</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">,</span> <span class="bp">NotImplemented</span><span class="o">=</span><span class="bp">NotImplemented</span><span class="p">):</span>
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<span class="s1">'Return a >= b. Computed by @total_ordering from (a > b) or (a == b).'</span>
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<span class="n">op_result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="fm">__gt__</span><span class="p">(</span><span class="n">other</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">op_result</span> <span class="ow">is</span> <span class="bp">NotImplemented</span><span class="p">:</span>
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<span class="k">return</span> <span class="n">op_result</span>
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<span class="k">return</span> <span class="n">op_result</span> <span class="ow">or</span> <span class="bp">self</span> <span class="o">==</span> <span class="n">other</span>
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<span class="k">def</span> <span class="nf">_le_from_gt</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">,</span> <span class="bp">NotImplemented</span><span class="o">=</span><span class="bp">NotImplemented</span><span class="p">):</span>
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@ -267,6 +269,45 @@
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<span class="k">pass</span>
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<span class="c1">################################################################################</span>
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<span class="c1">### reduce() sequence to a single item</span>
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<span class="c1">################################################################################</span>
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<span class="n">_initial_missing</span> <span class="o">=</span> <span class="nb">object</span><span class="p">()</span>
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<span class="k">def</span> <span class="nf">reduce</span><span class="p">(</span><span class="n">function</span><span class="p">,</span> <span class="n">sequence</span><span class="p">,</span> <span class="n">initial</span><span class="o">=</span><span class="n">_initial_missing</span><span class="p">):</span>
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<span class="sd">"""</span>
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<span class="sd"> reduce(function, sequence[, initial]) -> value</span>
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<span class="sd"> Apply a function of two arguments cumulatively to the items of a sequence,</span>
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<span class="sd"> from left to right, so as to reduce the sequence to a single value.</span>
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<span class="sd"> For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5]) calculates</span>
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<span class="sd"> ((((1+2)+3)+4)+5). If initial is present, it is placed before the items</span>
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<span class="sd"> of the sequence in the calculation, and serves as a default when the</span>
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<span class="sd"> sequence is empty.</span>
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<span class="sd"> """</span>
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<span class="n">it</span> <span class="o">=</span> <span class="nb">iter</span><span class="p">(</span><span class="n">sequence</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">initial</span> <span class="ow">is</span> <span class="n">_initial_missing</span><span class="p">:</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="n">value</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">it</span><span class="p">)</span>
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<span class="k">except</span> <span class="ne">StopIteration</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"reduce() of empty sequence with no initial value"</span><span class="p">)</span> <span class="kn">from</span> <span class="bp">None</span>
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<span class="k">else</span><span class="p">:</span>
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<span class="n">value</span> <span class="o">=</span> <span class="n">initial</span>
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<span class="k">for</span> <span class="n">element</span> <span class="ow">in</span> <span class="n">it</span><span class="p">:</span>
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<span class="n">value</span> <span class="o">=</span> <span class="n">function</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">element</span><span class="p">)</span>
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<span class="k">return</span> <span class="n">value</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="kn">from</span> <span class="nn">_functools</span> <span class="kn">import</span> <span class="n">reduce</span>
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<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
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<span class="k">pass</span>
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<span class="c1">################################################################################</span>
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<span class="c1">### partial() argument application</span>
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<span class="c1">################################################################################</span>
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@ -279,22 +320,13 @@
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<span class="vm">__slots__</span> <span class="o">=</span> <span class="s2">"func"</span><span class="p">,</span> <span class="s2">"args"</span><span class="p">,</span> <span class="s2">"keywords"</span><span class="p">,</span> <span class="s2">"__dict__"</span><span class="p">,</span> <span class="s2">"__weakref__"</span>
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<span class="k">def</span> <span class="fm">__new__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">args</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"descriptor '__new__' of partial needs an argument"</span><span class="p">)</span>
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<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o"><</span> <span class="mi">2</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"type 'partial' takes at least one argument"</span><span class="p">)</span>
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<span class="bp">cls</span><span class="p">,</span> <span class="n">func</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span> <span class="o">=</span> <span class="n">args</span>
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<span class="k">def</span> <span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">func</span><span class="p">,</span> <span class="o">/</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">callable</span><span class="p">(</span><span class="n">func</span><span class="p">):</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"the first argument must be callable"</span><span class="p">)</span>
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<span class="n">args</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
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<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="s2">"func"</span><span class="p">):</span>
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<span class="n">args</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">args</span> <span class="o">+</span> <span class="n">args</span>
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<span class="n">tmpkw</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">keywords</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
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<span class="n">tmpkw</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">keywords</span><span class="p">)</span>
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<span class="n">keywords</span> <span class="o">=</span> <span class="n">tmpkw</span>
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<span class="k">del</span> <span class="n">tmpkw</span>
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<span class="n">keywords</span> <span class="o">=</span> <span class="p">{</span><span class="o">**</span><span class="n">func</span><span class="o">.</span><span class="n">keywords</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">}</span>
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<span class="n">func</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">func</span>
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<span class="bp">self</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">partial</span><span class="p">,</span> <span class="bp">cls</span><span class="p">)</span><span class="o">.</span><span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span>
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@ -304,13 +336,9 @@
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<span class="bp">self</span><span class="o">.</span><span class="n">keywords</span> <span class="o">=</span> <span class="n">keywords</span>
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<span class="k">return</span> <span class="bp">self</span>
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<span class="k">def</span> <span class="fm">__call__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">args</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"descriptor '__call__' of partial needs an argument"</span><span class="p">)</span>
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<span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span> <span class="o">=</span> <span class="n">args</span>
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<span class="n">newkeywords</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">keywords</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
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<span class="n">newkeywords</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">keywords</span><span class="p">)</span>
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<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">(</span><span class="o">*</span><span class="bp">self</span><span class="o">.</span><span class="n">args</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">newkeywords</span><span class="p">)</span>
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<span class="k">def</span> <span class="fm">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">/</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
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<span class="n">keywords</span> <span class="o">=</span> <span class="p">{</span><span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">keywords</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">}</span>
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<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">(</span><span class="o">*</span><span class="bp">self</span><span class="o">.</span><span class="n">args</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">)</span>
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<span class="nd">@recursive_repr</span><span class="p">()</span>
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<span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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@ -364,20 +392,7 @@
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<span class="sd"> callables as instance methods.</span>
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<span class="sd"> """</span>
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<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
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<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">>=</span> <span class="mi">2</span><span class="p">:</span>
|
||||
<span class="bp">self</span><span class="p">,</span> <span class="n">func</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span> <span class="o">=</span> <span class="n">args</span>
|
||||
<span class="k">elif</span> <span class="ow">not</span> <span class="n">args</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"descriptor '__init__' of partialmethod "</span>
|
||||
<span class="s2">"needs an argument"</span><span class="p">)</span>
|
||||
<span class="k">elif</span> <span class="s1">'func'</span> <span class="ow">in</span> <span class="n">keywords</span><span class="p">:</span>
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||||
<span class="n">func</span> <span class="o">=</span> <span class="n">keywords</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s1">'func'</span><span class="p">)</span>
|
||||
<span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span> <span class="o">=</span> <span class="n">args</span>
|
||||
<span class="k">else</span><span class="p">:</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"type 'partialmethod' takes at least one argument, "</span>
|
||||
<span class="s2">"got </span><span class="si">%d</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span><span class="o">-</span><span class="mi">1</span><span class="p">))</span>
|
||||
<span class="n">args</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
|
||||
|
||||
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">func</span><span class="p">,</span> <span class="o">/</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
|
||||
<span class="k">if</span> <span class="ow">not</span> <span class="n">callable</span><span class="p">(</span><span class="n">func</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="s2">"__get__"</span><span class="p">):</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"</span><span class="si">{!r}</span><span class="s2"> is not callable or a descriptor"</span>
|
||||
<span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">func</span><span class="p">))</span>
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@ -390,8 +405,7 @@
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<span class="c1"># it's also more efficient since only one function will be called</span>
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||||
<span class="bp">self</span><span class="o">.</span><span class="n">func</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">func</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">args</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">args</span> <span class="o">+</span> <span class="n">args</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">keywords</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">keywords</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">keywords</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">keywords</span><span class="p">)</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">keywords</span> <span class="o">=</span> <span class="p">{</span><span class="o">**</span><span class="n">func</span><span class="o">.</span><span class="n">keywords</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">}</span>
|
||||
<span class="k">else</span><span class="p">:</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">func</span> <span class="o">=</span> <span class="n">func</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">args</span> <span class="o">=</span> <span class="n">args</span>
|
||||
|
|
@ -409,17 +423,14 @@
|
|||
<span class="n">keywords</span><span class="o">=</span><span class="n">keywords</span><span class="p">)</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">_make_unbound_method</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
||||
<span class="k">def</span> <span class="nf">_method</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
|
||||
<span class="n">call_keywords</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">keywords</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
|
||||
<span class="n">call_keywords</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">keywords</span><span class="p">)</span>
|
||||
<span class="n">cls_or_self</span><span class="p">,</span> <span class="o">*</span><span class="n">rest</span> <span class="o">=</span> <span class="n">args</span>
|
||||
<span class="n">call_args</span> <span class="o">=</span> <span class="p">(</span><span class="n">cls_or_self</span><span class="p">,)</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">args</span> <span class="o">+</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">rest</span><span class="p">)</span>
|
||||
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">(</span><span class="o">*</span><span class="n">call_args</span><span class="p">,</span> <span class="o">**</span><span class="n">call_keywords</span><span class="p">)</span>
|
||||
<span class="k">def</span> <span class="nf">_method</span><span class="p">(</span><span class="n">cls_or_self</span><span class="p">,</span> <span class="o">/</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">):</span>
|
||||
<span class="n">keywords</span> <span class="o">=</span> <span class="p">{</span><span class="o">**</span><span class="bp">self</span><span class="o">.</span><span class="n">keywords</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">}</span>
|
||||
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">(</span><span class="n">cls_or_self</span><span class="p">,</span> <span class="o">*</span><span class="bp">self</span><span class="o">.</span><span class="n">args</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">keywords</span><span class="p">)</span>
|
||||
<span class="n">_method</span><span class="o">.</span><span class="n">__isabstractmethod__</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">__isabstractmethod__</span>
|
||||
<span class="n">_method</span><span class="o">.</span><span class="n">_partialmethod</span> <span class="o">=</span> <span class="bp">self</span>
|
||||
<span class="k">return</span> <span class="n">_method</span>
|
||||
|
||||
<span class="k">def</span> <span class="fm">__get__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">obj</span><span class="p">,</span> <span class="bp">cls</span><span class="p">):</span>
|
||||
<span class="k">def</span> <span class="fm">__get__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">obj</span><span class="p">,</span> <span class="bp">cls</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
|
||||
<span class="n">get</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">,</span> <span class="s2">"__get__"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
|
||||
<span class="n">result</span> <span class="o">=</span> <span class="kc">None</span>
|
||||
<span class="k">if</span> <span class="n">get</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
|
||||
|
|
@ -442,6 +453,15 @@
|
|||
<span class="k">def</span> <span class="nf">__isabstractmethod__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
||||
<span class="k">return</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">,</span> <span class="s2">"__isabstractmethod__"</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span>
|
||||
|
||||
<span class="n">__class_getitem__</span> <span class="o">=</span> <span class="nb">classmethod</span><span class="p">(</span><span class="n">GenericAlias</span><span class="p">)</span>
|
||||
|
||||
|
||||
<span class="c1"># Helper functions</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">_unwrap_partial</span><span class="p">(</span><span class="n">func</span><span class="p">):</span>
|
||||
<span class="k">while</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="n">partial</span><span class="p">):</span>
|
||||
<span class="n">func</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="n">func</span>
|
||||
<span class="k">return</span> <span class="n">func</span>
|
||||
|
||||
<span class="c1">################################################################################</span>
|
||||
<span class="c1">### LRU Cache function decorator</span>
|
||||
|
|
@ -521,17 +541,23 @@
|
|||
<span class="c1"># The internals of the lru_cache are encapsulated for thread safety and</span>
|
||||
<span class="c1"># to allow the implementation to change (including a possible C version).</span>
|
||||
|
||||
<span class="c1"># Early detection of an erroneous call to @lru_cache without any arguments</span>
|
||||
<span class="c1"># resulting in the inner function being passed to maxsize instead of an</span>
|
||||
<span class="c1"># integer or None. Negative maxsize is treated as 0.</span>
|
||||
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">maxsize</span><span class="p">,</span> <span class="nb">int</span><span class="p">):</span>
|
||||
<span class="c1"># Negative maxsize is treated as 0</span>
|
||||
<span class="k">if</span> <span class="n">maxsize</span> <span class="o"><</span> <span class="mi">0</span><span class="p">:</span>
|
||||
<span class="n">maxsize</span> <span class="o">=</span> <span class="mi">0</span>
|
||||
<span class="k">elif</span> <span class="n">callable</span><span class="p">(</span><span class="n">maxsize</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">typed</span><span class="p">,</span> <span class="nb">bool</span><span class="p">):</span>
|
||||
<span class="c1"># The user_function was passed in directly via the maxsize argument</span>
|
||||
<span class="n">user_function</span><span class="p">,</span> <span class="n">maxsize</span> <span class="o">=</span> <span class="n">maxsize</span><span class="p">,</span> <span class="mi">128</span>
|
||||
<span class="n">wrapper</span> <span class="o">=</span> <span class="n">_lru_cache_wrapper</span><span class="p">(</span><span class="n">user_function</span><span class="p">,</span> <span class="n">maxsize</span><span class="p">,</span> <span class="n">typed</span><span class="p">,</span> <span class="n">_CacheInfo</span><span class="p">)</span>
|
||||
<span class="n">wrapper</span><span class="o">.</span><span class="n">cache_parameters</span> <span class="o">=</span> <span class="k">lambda</span> <span class="p">:</span> <span class="p">{</span><span class="s1">'maxsize'</span><span class="p">:</span> <span class="n">maxsize</span><span class="p">,</span> <span class="s1">'typed'</span><span class="p">:</span> <span class="n">typed</span><span class="p">}</span>
|
||||
<span class="k">return</span> <span class="n">update_wrapper</span><span class="p">(</span><span class="n">wrapper</span><span class="p">,</span> <span class="n">user_function</span><span class="p">)</span>
|
||||
<span class="k">elif</span> <span class="n">maxsize</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s1">'Expected maxsize to be an integer or None'</span><span class="p">)</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
|
||||
<span class="s1">'Expected first argument to be an integer, a callable, or None'</span><span class="p">)</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">decorating_function</span><span class="p">(</span><span class="n">user_function</span><span class="p">):</span>
|
||||
<span class="n">wrapper</span> <span class="o">=</span> <span class="n">_lru_cache_wrapper</span><span class="p">(</span><span class="n">user_function</span><span class="p">,</span> <span class="n">maxsize</span><span class="p">,</span> <span class="n">typed</span><span class="p">,</span> <span class="n">_CacheInfo</span><span class="p">)</span>
|
||||
<span class="n">wrapper</span><span class="o">.</span><span class="n">cache_parameters</span> <span class="o">=</span> <span class="k">lambda</span> <span class="p">:</span> <span class="p">{</span><span class="s1">'maxsize'</span><span class="p">:</span> <span class="n">maxsize</span><span class="p">,</span> <span class="s1">'typed'</span><span class="p">:</span> <span class="n">typed</span><span class="p">}</span>
|
||||
<span class="k">return</span> <span class="n">update_wrapper</span><span class="p">(</span><span class="n">wrapper</span><span class="p">,</span> <span class="n">user_function</span><span class="p">)</span>
|
||||
|
||||
<span class="k">return</span> <span class="n">decorating_function</span>
|
||||
|
|
@ -658,6 +684,15 @@
|
|||
<span class="k">pass</span>
|
||||
|
||||
|
||||
<span class="c1">################################################################################</span>
|
||||
<span class="c1">### cache -- simplified access to the infinity cache</span>
|
||||
<span class="c1">################################################################################</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">cache</span><span class="p">(</span><span class="n">user_function</span><span class="p">,</span> <span class="o">/</span><span class="p">):</span>
|
||||
<span class="s1">'Simple lightweight unbounded cache. Sometimes called "memoize".'</span>
|
||||
<span class="k">return</span> <span class="n">lru_cache</span><span class="p">(</span><span class="n">maxsize</span><span class="o">=</span><span class="kc">None</span><span class="p">)(</span><span class="n">user_function</span><span class="p">)</span>
|
||||
|
||||
|
||||
<span class="c1">################################################################################</span>
|
||||
<span class="c1">### singledispatch() - single-dispatch generic function decorator</span>
|
||||
<span class="c1">################################################################################</span>
|
||||
|
|
@ -864,9 +899,11 @@
|
|||
<span class="c1"># only import typing if annotation parsing is necessary</span>
|
||||
<span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">get_type_hints</span>
|
||||
<span class="n">argname</span><span class="p">,</span> <span class="bp">cls</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="nb">iter</span><span class="p">(</span><span class="n">get_type_hints</span><span class="p">(</span><span class="n">func</span><span class="p">)</span><span class="o">.</span><span class="n">items</span><span class="p">()))</span>
|
||||
<span class="k">assert</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">type</span><span class="p">),</span> <span class="p">(</span>
|
||||
<span class="sa">f</span><span class="s2">"Invalid annotation for </span><span class="si">{</span><span class="n">argname</span><span class="si">!r}</span><span class="s2">. </span><span class="si">{</span><span class="bp">cls</span><span class="si">!r}</span><span class="s2"> is not a class."</span>
|
||||
<span class="p">)</span>
|
||||
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="nb">type</span><span class="p">):</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
|
||||
<span class="sa">f</span><span class="s2">"Invalid annotation for </span><span class="si">{</span><span class="n">argname</span><span class="si">!r}</span><span class="s2">. "</span>
|
||||
<span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="bp">cls</span><span class="si">!r}</span><span class="s2"> is not a class."</span>
|
||||
<span class="p">)</span>
|
||||
<span class="n">registry</span><span class="p">[</span><span class="bp">cls</span><span class="p">]</span> <span class="o">=</span> <span class="n">func</span>
|
||||
<span class="k">if</span> <span class="n">cache_token</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">and</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="s1">'__abstractmethods__'</span><span class="p">):</span>
|
||||
<span class="n">cache_token</span> <span class="o">=</span> <span class="n">get_cache_token</span><span class="p">()</span>
|
||||
|
|
@ -888,6 +925,100 @@
|
|||
<span class="n">wrapper</span><span class="o">.</span><span class="n">_clear_cache</span> <span class="o">=</span> <span class="n">dispatch_cache</span><span class="o">.</span><span class="n">clear</span>
|
||||
<span class="n">update_wrapper</span><span class="p">(</span><span class="n">wrapper</span><span class="p">,</span> <span class="n">func</span><span class="p">)</span>
|
||||
<span class="k">return</span> <span class="n">wrapper</span>
|
||||
|
||||
|
||||
<span class="c1"># Descriptor version</span>
|
||||
<span class="k">class</span> <span class="nc">singledispatchmethod</span><span class="p">:</span>
|
||||
<span class="sd">"""Single-dispatch generic method descriptor.</span>
|
||||
|
||||
<span class="sd"> Supports wrapping existing descriptors and handles non-descriptor</span>
|
||||
<span class="sd"> callables as instance methods.</span>
|
||||
<span class="sd"> """</span>
|
||||
|
||||
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">func</span><span class="p">):</span>
|
||||
<span class="k">if</span> <span class="ow">not</span> <span class="n">callable</span><span class="p">(</span><span class="n">func</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">func</span><span class="p">,</span> <span class="s2">"__get__"</span><span class="p">):</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">func</span><span class="si">!r}</span><span class="s2"> is not callable or a descriptor"</span><span class="p">)</span>
|
||||
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">dispatcher</span> <span class="o">=</span> <span class="n">singledispatch</span><span class="p">(</span><span class="n">func</span><span class="p">)</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">func</span> <span class="o">=</span> <span class="n">func</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">register</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="bp">cls</span><span class="p">,</span> <span class="n">method</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
|
||||
<span class="sd">"""generic_method.register(cls, func) -> func</span>
|
||||
|
||||
<span class="sd"> Registers a new implementation for the given *cls* on a *generic_method*.</span>
|
||||
<span class="sd"> """</span>
|
||||
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dispatcher</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">func</span><span class="o">=</span><span class="n">method</span><span class="p">)</span>
|
||||
|
||||
<span class="k">def</span> <span class="fm">__get__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">obj</span><span class="p">,</span> <span class="bp">cls</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
|
||||
<span class="k">def</span> <span class="nf">_method</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
|
||||
<span class="n">method</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">dispatcher</span><span class="o">.</span><span class="n">dispatch</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span>
|
||||
<span class="k">return</span> <span class="n">method</span><span class="o">.</span><span class="fm">__get__</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="bp">cls</span><span class="p">)(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
|
||||
|
||||
<span class="n">_method</span><span class="o">.</span><span class="n">__isabstractmethod__</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">__isabstractmethod__</span>
|
||||
<span class="n">_method</span><span class="o">.</span><span class="n">register</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">register</span>
|
||||
<span class="n">update_wrapper</span><span class="p">(</span><span class="n">_method</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">)</span>
|
||||
<span class="k">return</span> <span class="n">_method</span>
|
||||
|
||||
<span class="nd">@property</span>
|
||||
<span class="k">def</span> <span class="nf">__isabstractmethod__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
||||
<span class="k">return</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">,</span> <span class="s1">'__isabstractmethod__'</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span>
|
||||
|
||||
|
||||
<span class="c1">################################################################################</span>
|
||||
<span class="c1">### cached_property() - computed once per instance, cached as attribute</span>
|
||||
<span class="c1">################################################################################</span>
|
||||
|
||||
<span class="n">_NOT_FOUND</span> <span class="o">=</span> <span class="nb">object</span><span class="p">()</span>
|
||||
|
||||
|
||||
<span class="k">class</span> <span class="nc">cached_property</span><span class="p">:</span>
|
||||
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">func</span><span class="p">):</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">func</span> <span class="o">=</span> <span class="n">func</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">attrname</span> <span class="o">=</span> <span class="kc">None</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="vm">__doc__</span> <span class="o">=</span> <span class="n">func</span><span class="o">.</span><span class="vm">__doc__</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">lock</span> <span class="o">=</span> <span class="n">RLock</span><span class="p">()</span>
|
||||
|
||||
<span class="k">def</span> <span class="nf">__set_name__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">owner</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span>
|
||||
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">attrname</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||||
<span class="bp">self</span><span class="o">.</span><span class="n">attrname</span> <span class="o">=</span> <span class="n">name</span>
|
||||
<span class="k">elif</span> <span class="n">name</span> <span class="o">!=</span> <span class="bp">self</span><span class="o">.</span><span class="n">attrname</span><span class="p">:</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
|
||||
<span class="s2">"Cannot assign the same cached_property to two different names "</span>
|
||||
<span class="sa">f</span><span class="s2">"(</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">attrname</span><span class="si">!r}</span><span class="s2"> and </span><span class="si">{</span><span class="n">name</span><span class="si">!r}</span><span class="s2">)."</span>
|
||||
<span class="p">)</span>
|
||||
|
||||
<span class="k">def</span> <span class="fm">__get__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">instance</span><span class="p">,</span> <span class="n">owner</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
|
||||
<span class="k">if</span> <span class="n">instance</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||||
<span class="k">return</span> <span class="bp">self</span>
|
||||
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">attrname</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
|
||||
<span class="s2">"Cannot use cached_property instance without calling __set_name__ on it."</span><span class="p">)</span>
|
||||
<span class="k">try</span><span class="p">:</span>
|
||||
<span class="n">cache</span> <span class="o">=</span> <span class="n">instance</span><span class="o">.</span><span class="vm">__dict__</span>
|
||||
<span class="k">except</span> <span class="ne">AttributeError</span><span class="p">:</span> <span class="c1"># not all objects have __dict__ (e.g. class defines slots)</span>
|
||||
<span class="n">msg</span> <span class="o">=</span> <span class="p">(</span>
|
||||
<span class="sa">f</span><span class="s2">"No '__dict__' attribute on </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">instance</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span><span class="si">!r}</span><span class="s2"> "</span>
|
||||
<span class="sa">f</span><span class="s2">"instance to cache </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">attrname</span><span class="si">!r}</span><span class="s2"> property."</span>
|
||||
<span class="p">)</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="kn">from</span> <span class="bp">None</span>
|
||||
<span class="n">val</span> <span class="o">=</span> <span class="n">cache</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">attrname</span><span class="p">,</span> <span class="n">_NOT_FOUND</span><span class="p">)</span>
|
||||
<span class="k">if</span> <span class="n">val</span> <span class="ow">is</span> <span class="n">_NOT_FOUND</span><span class="p">:</span>
|
||||
<span class="k">with</span> <span class="bp">self</span><span class="o">.</span><span class="n">lock</span><span class="p">:</span>
|
||||
<span class="c1"># check if another thread filled cache while we awaited lock</span>
|
||||
<span class="n">val</span> <span class="o">=</span> <span class="n">cache</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">attrname</span><span class="p">,</span> <span class="n">_NOT_FOUND</span><span class="p">)</span>
|
||||
<span class="k">if</span> <span class="n">val</span> <span class="ow">is</span> <span class="n">_NOT_FOUND</span><span class="p">:</span>
|
||||
<span class="n">val</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">func</span><span class="p">(</span><span class="n">instance</span><span class="p">)</span>
|
||||
<span class="k">try</span><span class="p">:</span>
|
||||
<span class="n">cache</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">attrname</span><span class="p">]</span> <span class="o">=</span> <span class="n">val</span>
|
||||
<span class="k">except</span> <span class="ne">TypeError</span><span class="p">:</span>
|
||||
<span class="n">msg</span> <span class="o">=</span> <span class="p">(</span>
|
||||
<span class="sa">f</span><span class="s2">"The '__dict__' attribute on </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">instance</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span><span class="si">!r}</span><span class="s2"> instance "</span>
|
||||
<span class="sa">f</span><span class="s2">"does not support item assignment for caching </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">attrname</span><span class="si">!r}</span><span class="s2"> property."</span>
|
||||
<span class="p">)</span>
|
||||
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="kn">from</span> <span class="bp">None</span>
|
||||
<span class="k">return</span> <span class="n">val</span>
|
||||
|
||||
<span class="n">__class_getitem__</span> <span class="o">=</span> <span class="nb">classmethod</span><span class="p">(</span><span class="n">GenericAlias</span><span class="p">)</span>
|
||||
</pre></div>
|
||||
|
||||
<div class="clearer"></div>
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue