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New posts in python-internals
Why is code using intermediate variables faster than code without?
Feb 03, 2022
python
python-3.x
cpython
python-internals
Why can I use the same name for iterator and sequence in a Python for loop?
Aug 19, 2022
python
for-loop
variable-assignment
python-internals
Python: why are * and ** faster than / and sqrt()?
Nov 14, 2022
python
c
performance
python-2.7
python-internals
list() uses slightly more memory than list comprehension
Oct 15, 2022
python
list
list-comprehension
cpython
python-internals
What exactly is __weakref__ in Python?
Aug 17, 2022
python
python-3.x
python-internals
Why is copying a shuffled list much slower?
Jun 21, 2022
python
python-internals
Why is max slower than sort?
Feb 04, 2020
python
sorting
max
python-internals
What's with the integer cache maintained by the interpreter?
Aug 17, 2022
python
caching
code-analysis
literals
python-internals
When are .pyc files refreshed?
Aug 17, 2022
python
python-internals
pyc
Why does tuple(set([1,"a","b","c","z","f"])) == tuple(set(["a","b","c","z","f",1])) 85% of the time with hash randomization enabled?
Jun 29, 2021
python
hash
set
cpython
python-internals
Why is a class __dict__ a mappingproxy?
Oct 15, 2022
python
python-3.x
class
dictionary
python-internals
When is hash(n) == n in Python?
Aug 16, 2022
python
python-2.7
python-3.x
hash
python-internals
Python string interning
Aug 16, 2022
python
string
python-internals
internals
string-interning
Does Python optimize away a variable that's only used as a return value?
Aug 16, 2022
python
interpreter
python-internals
Why do tuples take less space in memory than lists?
Sep 14, 2022
python
python-2.7
list
tuples
python-internals
Why is str.translate much faster in Python 3.5 compared to Python 3.4?
Dec 14, 2021
python
string
python-3.x
python-internals
python-3.5
How to override the copy/deepcopy operations for a Python object?
Aug 16, 2022
python
python-internals
About Python's built in sort() method
Sep 25, 2022
python
algorithm
sorting
python-internals
Why is it slower to iterate over a small string than a small list?
Aug 15, 2022
python
performance
cpython
timeit
python-internals
What causes [*a] to overallocate?
Dec 14, 2021
python
python-3.x
list
cpython
python-internals
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