Current File : //lib/python3/dist-packages/jaraco/classes/ancestry.py
"""
Routines for obtaining the class names
of an object and its parent classes.
"""
from more_itertools import unique_everseen
def all_bases(c):
"""
return a tuple of all base classes the class c has as a parent.
>>> object in all_bases(list)
True
"""
return c.mro()[1:]
def all_classes(c):
"""
return a tuple of all classes to which c belongs
>>> list in all_classes(list)
True
"""
return c.mro()
# borrowed from
# http://code.activestate.com/recipes/576949-find-all-subclasses-of-a-given-class/
def iter_subclasses(cls):
"""
Generator over all subclasses of a given class, in depth-first order.
>>> bool in list(iter_subclasses(int))
True
>>> class A(object): pass
>>> class B(A): pass
>>> class C(A): pass
>>> class D(B,C): pass
>>> class E(D): pass
>>>
>>> for cls in iter_subclasses(A):
... print(cls.__name__)
B
D
E
C
>>> # get ALL classes currently defined
>>> res = [cls.__name__ for cls in iter_subclasses(object)]
>>> 'type' in res
True
>>> 'tuple' in res
True
>>> len(res) > 100
True
"""
return unique_everseen(_iter_all_subclasses(cls))
def _iter_all_subclasses(cls):
try:
subs = cls.__subclasses__()
except TypeError: # fails only when cls is type
subs = cls.__subclasses__(cls)
for sub in subs:
yield sub
yield from iter_subclasses(sub)
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