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What is the __del__ method, How to call it?
...r the function ends. In particular, unless there are circular references, CPython (the standard Python implementation) will garbage collect immediately.
However, this is an implementation detail of CPython. The only required property of Python garbage collection is that it happens after all refere...
How do I draw a grid onto a plot in Python?
I just finished writing code to make a plot using pylab in Python and now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that?
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What is the recommended way to use Vim folding for Python code
I am interested in enabling code folding in Vim for Python code. I have noticed multiple ways to do so.
11 Answers
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What version of Visual Studio is Python on my computer compiled with?
...rying to find out the version of Visual Studio that is used to compile the Python on my computer
2 Answers
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Converting a list to a set changes element order
...rship tests and preservation of insertion order, you can use the keys of a Python dictionary, which starting from Python 3.7 is guaranteed to preserve the insertion order:
>>> a = dict.fromkeys([1, 2, 20, 6, 210])
>>> b = dict.fromkeys([6, 20, 1])
>>> dict.fromkeys(x for ...
What does if __name__ == “__main__”: do?
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Whenever the Python interpreter reads a source file, it does two things:
it sets a few special variables like __name__, and then
it executes all of the code found in the file.
Let's see how this works and how it relates to your questi...
Numpy: find first index of value fast
...umba (1) is the easiest way until numpy implements it. If you use anaconda python distribution it should already be installed.
The code will be compiled so it will be fast.
@jit(nopython=True)
def find_first(item, vec):
"""return the index of the first occurence of item in vec"""
for i in x...
How to use glob() to find files recursively?
...se pathlib.Path.rglob from the the pathlib module, which was introduced in Python 3.5.
from pathlib import Path
for path in Path('src').rglob('*.c'):
print(path.name)
If you don't want to use pathlib, use can use glob.glob('**/*.c'), but don't forget to pass in the recursive keyword parameter ...
Catch a thread's exception in the caller thread in Python
I'm very new to Python and multithreaded programming in general. Basically, I have a script that will copy files to another location. I would like this to be placed in another thread so I can output .... to indicate that the script is still running.
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Circular (or cyclic) imports in Python
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There was a really good discussion on this over at comp.lang.python last year. It answers your question pretty thoroughly.
Imports are pretty straightforward really. Just remember the following:
'import' and 'from xxx import yyy' are executable statements. They execute
when ...