大约有 43,000 项符合查询结果（耗时：0.0469秒） [XML]
Compare object instances for equality by their attributes
...:27
wim
241k7070 gold badges435435 silver badges577577 bronze badges
answered Aug 4 '09 at 12:47
e-satise-sati...
Confused about __str__ on list in Python [duplicate]
...
146
Python has two different ways to convert an object to a string: str() and repr(). Printing an ...
Getting attributes of a class
...lpful.
EDIT:
For example,
class MyClass(object):
a = '12'
b = '34'
def myfunc(self):
return self.a
>>> import inspect
>>> inspect.getmembers(MyClass, lambda a:not(inspect.isroutine(a)))
[('__class__', type),
('__dict__',
<dictproxy {'__dict__': <att...
`if __name__ == '__main__'` equivalent in Ruby
...
MatchuMatchu
74.4k1414 gold badges145145 silver badges157157 bronze badges
...
Usage of __slots__?
...elete
and
>>> min(timeit.repeat(get_set_delete_fn(slotted)))
0.2846834529991611
>>> min(timeit.repeat(get_set_delete_fn(not_slotted)))
0.3664822799983085
The slotted access is almost 30% faster in Python 3.5 on Ubuntu.
>>> 0.3664822799983085 / 0.2846834529991611
1.287332...
Split data frame string column into multiple columns
...
answered Dec 4 '10 at 4:21
hadleyhadley
91.2k2626 gold badges167167 silver badges234234 bronze badges
...
Why is Python 3.x's super() magic?
...class Foo(Bar):
def baz(self):
return super(Foo, self).baz() + 42
Spam = Foo
Foo = something_else()
Spam().baz() # liable to blow up
The same applies to using class decorators where the decorator returns a new object, which rebinds the class name:
@class_decorator_returning_new_cla...
Why do some C# lambda expressions compile to static methods?
...
|
edited Sep 1 '14 at 10:48
answered Sep 1 '14 at 10:43
...
std::function and std::bind: what are they, and when should they be used?
...
4 Answers
4
Active
...
What is the difference between class and instance attributes?
...
147
Beyond performance considerations, there is a significant semantic difference. In the class at...