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New posts in python-internals
Why does id({}) == id({}) and id([]) == id([]) in CPython?
Oct 12, 2022
python
identity
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Accessing dictionary items by position in Python 3.6+ efficiently
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Converting a series of ints to strings - Why is apply much faster than astype?
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Using a function defined in an exec'ed string in Python 3 [duplicate]
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Printing without parentheses varying error message using Python 3
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Fatal Python error and `BufferedWriter`
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When is a function in a standard library module called a built-in function?
Sep 03, 2022
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How is the __name__ variable in a Python module defined?
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python
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Why do ints require three times as much memory in Python?
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python
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memory
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How is tuple implemented in CPython?
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python
data-structures
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Why is str.strip() so much faster than str.strip(' ')?
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python
string
performance
python-3.x
python-internals
What does "del" do exactly?
Aug 17, 2022
python
memory
python-internals
Why is float() faster than int()?
Sep 02, 2022
python
python-2.7
performance
python-internals
Why is repr(int) faster than str(int)?
Oct 16, 2022
python
performance
python-internals
Why is True returned when checking if an empty string is in another?
Sep 02, 2022
python
string
python-internals
Understanding memory allocation for large integers in Python
Oct 09, 2022
python
python-3.x
int
python-internals
Tuple or list when using 'in' in an 'if' clause?
Sep 01, 2022
python
list
optimization
tuples
python-internals
Why is list(x for x in a) faster for a=[0] than for a=[]?
Sep 05, 2022
python
performance
cpython
python-internals
How big can the input to the input() function be?
Sep 01, 2022
python
string
python-3.x
function
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Why does list ask about __len__?
Aug 31, 2022
python
list
python-internals
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