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< h1 > Source code for django.utils.deconstruct< / h1 > < div class = "highlight" > < pre >
< span > < / span > < span class = "kn" > from< / span > < span class = "nn" > importlib< / span > < span class = "kn" > import< / span > < span class = "n" > import_module< / span >
< span class = "kn" > from< / span > < span class = "nn" > django.utils.version< / span > < span class = "kn" > import< / span > < span class = "n" > get_docs_version< / span >
< span class = "k" > def< / span > < span class = "nf" > deconstructible< / span > < span class = "p" > (< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "n" > path< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " < / span >
< span class = "sd" > Class decorator that allows the decorated class to be serialized< / span >
< span class = "sd" > by the migrations subsystem.< / span >
< span class = "sd" > The `path` kwarg specifies the import path.< / span >
< span class = "sd" > " " " < / span >
< span class = "k" > def< / span > < span class = "nf" > decorator< / span > < span class = "p" > (< / span > < span class = "n" > klass< / span > < span class = "p" > ):< / span >
< 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 = "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 = "c1" > # We capture the arguments to make returning them trivial< / span >
< span class = "n" > obj< / span > < span class = "o" > =< / span > < span class = "nb" > super< / span > < span class = "p" > (< / span > < span class = "n" > klass< / 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 >
< span class = "n" > obj< / span > < span class = "o" > .< / span > < span class = "n" > _constructor_args< / span > < span class = "o" > =< / span > < span class = "p" > (< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "n" > kwargs< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "n" > obj< / span >
< span class = "k" > def< / span > < span class = "nf" > deconstruct< / span > < span class = "p" > (< / span > < span class = "n" > obj< / span > < span class = "p" > ):< / span >
< span class = "sd" > " " " < / span >
< span class = "sd" > Return a 3-tuple of class import path, positional arguments,< / span >
< span class = "sd" > and keyword arguments.< / span >
< span class = "sd" > " " " < / span >
< span class = "c1" > # Fallback version< / span >
< span class = "k" > if< / span > < span class = "n" > path< / span > < span class = "p" > :< / span >
< span class = "n" > module_name< / span > < span class = "p" > ,< / span > < span class = "n" > _< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > rpartition< / span > < span class = "p" > (< / span > < span class = "s1" > ' .' < / span > < span class = "p" > )< / span >
< span class = "k" > else< / span > < span class = "p" > :< / span >
< span class = "n" > module_name< / span > < span class = "o" > =< / span > < span class = "n" > obj< / span > < span class = "o" > .< / span > < span class = "vm" > __module__< / span >
< span class = "n" > name< / span > < span class = "o" > =< / span > < span class = "n" > obj< / span > < span class = "o" > .< / span > < span class = "vm" > __class__< / span > < span class = "o" > .< / span > < span class = "vm" > __name__< / span >
< span class = "c1" > # Make sure it' s actually there and not an inner class< / span >
< span class = "n" > module< / span > < span class = "o" > =< / span > < span class = "n" > import_module< / span > < span class = "p" > (< / span > < span class = "n" > module_name< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "nb" > hasattr< / span > < span class = "p" > (< / span > < span class = "n" > module< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "p" > ):< / span >
< span class = "k" > raise< / span > < span class = "ne" > ValueError< / span > < span class = "p" > (< / span >
< span class = "s2" > " Could not find object < / span > < span class = "si" > %s< / span > < span class = "s2" > in < / span > < span class = "si" > %s< / span > < span class = "s2" > .< / span > < span class = "se" > \n< / span > < span class = "s2" > " < / span >
< span class = "s2" > " Please note that you cannot serialize things like inner " < / span >
< span class = "s2" > " classes. Please move the object into the main module " < / span >
< span class = "s2" > " body to use migrations.< / span > < span class = "se" > \n< / span > < span class = "s2" > " < / span >
< span class = "s2" > " For more information, see " < / span >
< span class = "s2" > " https://docs.djangoproject.com/en/< / span > < span class = "si" > %s< / span > < span class = "s2" > /topics/migrations/#serializing-values" < / span >
< span class = "o" > %< / span > < span class = "p" > (< / span > < span class = "n" > name< / span > < span class = "p" > ,< / span > < span class = "n" > module_name< / span > < span class = "p" > ,< / span > < span class = "n" > get_docs_version< / span > < span class = "p" > ()))< / span >
< span class = "k" > return< / span > < span class = "p" > (< / span >
< span class = "n" > path< / span > < span class = "ow" > or< / span > < span class = "s1" > ' < / span > < span class = "si" > %s< / span > < span class = "s1" > .< / span > < span class = "si" > %s< / span > < span class = "s1" > ' < / span > < span class = "o" > %< / span > < span class = "p" > (< / span > < span class = "n" > obj< / span > < span class = "o" > .< / span > < span class = "vm" > __class__< / span > < span class = "o" > .< / span > < span class = "vm" > __module__< / span > < span class = "p" > ,< / span > < span class = "n" > name< / span > < span class = "p" > ),< / span >
< span class = "n" > obj< / span > < span class = "o" > .< / span > < span class = "n" > _constructor_args< / span > < span class = "p" > [< / span > < span class = "mi" > 0< / span > < span class = "p" > ],< / span >
< span class = "n" > obj< / span > < span class = "o" > .< / span > < span class = "n" > _constructor_args< / span > < span class = "p" > [< / span > < span class = "mi" > 1< / span > < span class = "p" > ],< / span >
< span class = "p" > )< / span >
< span class = "n" > klass< / span > < span class = "o" > .< / span > < span class = "fm" > __new__< / span > < span class = "o" > =< / span > < span class = "nb" > staticmethod< / span > < span class = "p" > (< / span > < span class = "fm" > __new__< / span > < span class = "p" > )< / span >
< span class = "n" > klass< / span > < span class = "o" > .< / span > < span class = "n" > deconstruct< / span > < span class = "o" > =< / span > < span class = "n" > deconstruct< / span >
< span class = "k" > return< / span > < span class = "n" > klass< / span >
< span class = "k" > if< / span > < span class = "ow" > not< / span > < span class = "n" > args< / span > < span class = "p" > :< / span >
< span class = "k" > return< / span > < span class = "n" > decorator< / span >
< span class = "k" > return< / span > < span class = "n" > decorator< / span > < span class = "p" > (< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > )< / span >
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