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# http://python.org/sf/1303614
class Y(object):
pass
class type_with_modifiable_dict(Y, type):
pass
class MyClass(object, metaclass=type_with_modifiable_dict):
"""This class has its __dict__ attribute completely exposed:
user code can read, reassign and even delete it.
"""
if __name__ == '__main__':
del MyClass.__dict__ # if we set tp_dict to NULL,
print(MyClass) # doing anything with MyClass segfaults
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