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Check whether a path is valid in Python without creating a file at the path's target
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Call the is_path_exists_or_creatable() function defined below.
Strictly Python 3. That's just how we roll.
A Tale of Two Questions
The question of "How do I test pathname validity and, for valid pathnames, the existence or writability of those paths?" is clearly two separate questions. Both are...
How can I create a copy of an object in Python?
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How can I create a copy of an object in Python?
So, if I change values of the fields of the new object, the old object should not be affected by that.
You mean a mutable object then.
In Python 3, lists get a copy method (in 2, you'd use a slice to make a copy):
&g...
What is the standard Python docstring format? [closed]
I have seen a few different styles of writing docstrings in Python, is there an official or "agreed-upon" style?
7 Answers
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Standard deviation of a list
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Since Python 3.4 / PEP450 there is a statistics module in the standard library, which has a method stdev for calculating the standard deviation of iterables like yours:
>>> A_rank = [0.8, 0.4, 1.2, 3.7, 2.6, 5.8]
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How to implement a good __hash__ function in python [duplicate]
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It's unfortunate that Python does not make a combine_hashes function available.
– Fred Foo
Sep 20 '12 at 11:34
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Why (0-6) is -6 = False? [duplicate]
... 256 inclusive are cached as global objects sharing the same address with CPython, thus the is test passes.
This artifact is explained in detail in http://www.laurentluce.com/posts/python-integer-objects-implementation/, and we could check the current source code in http://hg.python.org/cpython/fil...
multiprocessing: sharing a large read-only object between processes?
...ed via multiprocessing share objects created earlier in the program?"
No (python before 3.8), and Yes in 3.8 (https://docs.python.org/3/library/multiprocessing.shared_memory.html#module-multiprocessing.shared_memory)
Processes have independent memory space.
Solution 1
To make best use of a large...
Using python map and other functional tools
...uite n00bish, but I'm trying to learn/understand functional programming in python. The following code:
9 Answers
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How do I keep two side-by-side divs the same height?
...'t say I've ever tested in that :) Good to know though, cheers. (Given its PDF focus I bet it supports some of the print-related features of CSS 2.1 that aren't implemented very well in browsers.)
– Paul D. Waite
Feb 19 '13 at 17:02
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Python: Using .format() on a Unicode-escaped string
I am using Python 2.6.5. My code requires the use of the "more than or equal to" sign. Here it goes:
3 Answers
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