Essentially I want to do something like this: class foo: x = 4 @property @classmethod def number(cls): return x Then I would like the following to work: >>> foo.number 4 Unfortunately, the above doesn’t work. Instead of given me 4 it gives me <property object at 0x101786c58>. Is there any way to achieve the above? … Read more
Without subclassing dict, what would a class need to be considered a mapping so that it can be passed to a method with **.
With PEP 557 data classes are introduced into python standard library.
>>> class A(object): pass … >>> A.__dict__ <dictproxy object at 0x173ef30> >>> A.__dict__.__dict__ Traceback (most recent call last): File "<string>", line 1, in <fragment> AttributeError: 'dictproxy' object has no attribute '__dict__' >>> A.__dict__.copy() {'__dict__': <attribute '__dict__' of 'A' objects> … } >>> A.__dict__['__dict__'] <attribute '__dict__' of 'A' objects> # What is this object? If I … Read more
I noticed that in Python, people initialize their class attributes in two different ways. The first way is like this: class MyClass: __element1 = 123 __element2 = "this is Africa" def __init__(self): #pass or something else The other style looks like: class MyClass: def __init__(self): self.__element1 = 123 self.__element2 = "this is Africa" Which is … Read more
I want to override access to one variable in a class, but return all others normally. How do I accomplish this with __getattribute__?
I am creating a word parsing class and I keep getting a
I don’t really need to do this, but was just wondering, is there a way to bind a decorator to all functions within a class generically, rather than explicitly stating it for every function.
How can I make methods and data members private in Python? Or doesn’t Python support private members?
The following seems strange.. Basically, the somedata attribute seems shared between all the classes that inherited from the_base_class. class the_base_class: somedata = {} somedata['was_false_in_base'] = False class subclassthing(the_base_class): def __init__(self): print self.somedata first = subclassthing() {'was_false_in_base': False} first.somedata['was_false_in_base'] = True second = subclassthing() {'was_false_in_base': True} >>> del first >>> del second >>> third = subclassthing() … Read more