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How do I get the parent directory in Python?
Could someone tell me how to get the parent directory of a path in Python in a cross platform way. E.g.
19 Answers
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Is there a standardized method to swap two variables in Python?
In Python, I've seen two variable values swapped using this syntax:
7 Answers
7
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Programmatically generate video or animated GIF in Python?
... each frame but a fixed frame rate would be fine too. I'm doing this in wxPython, so I can render to a wxDC or I can save the images to files, like PNG. Is there a Python library that will allow me to create either a video (AVI, MPG, etc) or an animated GIF from these frames?
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Why does Python code run faster in a function?
This piece of code in Python runs in (Note: The timing is done with the time function in BASH in Linux.)
3 Answers
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Display number with leading zeros
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In Python 2 (and Python 3) you can do:
print "%02d" % (1,)
Basically % is like printf or sprintf (see docs).
For Python 3.+, the same behavior can also be achieved with format:
print("{:02d}".format(1))
For Python 3.6...
Union of dict objects in Python [duplicate]
How do you calculate the union of two dict objects in Python, where a (key, value) pair is present in the result iff key is in either dict (unless there are duplicates)?
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Select distinct values from a table field
...red Aug 6 '18 at 1:33
Roger SodréRoger Sodré
36022 silver badges88 bronze badges
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Switch case with fallthrough?
...answered Aug 21 '15 at 12:15
René SteetskampRené Steetskamp
69366 silver badges1111 bronze badges
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Class method differences in Python: bound, unbound and static
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In Python, there is a distinction between bound and unbound methods.
Basically, a call to a member function (like method_one), a bound function
a_test.method_one()
is translated to
Test.method_one(a_test)
i.e. a call to ...
Python __str__ and lists
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Calling string on a python list calls the __repr__ method on each element inside. For some items, __str__ and __repr__ are the same. If you want that behavior, do:
def __str__(self):
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def __repr__(self):
return self.__str__()
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