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Finding the source code for built-in Python functions?
Is there a way to see how built in functions work in python? I don't mean just how to use them, but also how were they built, what is the code behind sorted or enumerate etc...?
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Unable to import a module that is definitely installed
..., just running sudo pip install .... Simple fix: sudo chmod -R ugo+rX /lib/python2.7/site-packages/
– jozxyqk
Feb 16 '15 at 10:04
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Running unittest with typical test directory structure
The very common directory structure for even a simple Python module seems to be to separate the unit tests into their own test directory:
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Convert a python UTC datetime to a local datetime using only python standard library?
I have a python datetime instance that was created using datetime.utcnow() and persisted in database.
12 Answers
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Running single test from unittest.TestCase via command line
...s works as you suggest - you just have to specify the class name as well:
python testMyCase.py MyCase.testItIsHot
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Can't import my own modules in Python
I'm having a hard time understanding how module importing works in Python (I've never done it in any other language before either).
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How do I detect if Python is running as a 64-bit application? [duplicate]
...g some work with the windows registry. Depending on whether you're running python as 32-bit or 64-bit, the key value will be different. How do I detect if Python is running as a 64-bit application as opposed to a 32-bit application?
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List comprehension on a nested list?
...n.
Lets do a performance benchmark to see if it is actually true. I used python version 3.5.0 to perform all these tests. In first set of tests I would like to keep elements per list to be 10 and vary number of lists from 10-100,000
>>> python -m timeit "[list(map(float,k)) for k in [lis...
What is the purpose of the -m switch?
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The first line of the Rationale section of PEP 338 says:
Python 2.4 adds the command line switch -m to allow modules to be located using the Python module namespace for execution as scripts. The motivating examples were standard library modules such as pdb and profile, and the Pyth...
multiple prints on the same line in Python
...uld note that there will be an extra space at the end of the output).
The Python 3 Solution
Since the above does not work in Python 3, you can do this instead (again, without importing sys):
def install_xxx():
print("Installing XXX... ", end="", flush=True)
install_xxx()
print("[DONE]")
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