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New posts in python-internals
Is removing a list element by index more efficient than removing it by value?
Sep 13, 2026
python
performance
runtime
python-internals
Does Python not reuse memory here? What does tracemalloc's output mean?
Sep 06, 2026
python
memory
cpython
python-internals
tracemalloc
Weird problem with __getattr__where the item string gets changed during the call [duplicate]
Sep 02, 2026
python
python-3.x
unicode
identifier
python-internals
Where can I find the source code of os.urandom()?
Aug 29, 2026
python
python-3.x
random
python-internals
How does CPython implement os.environ?
Aug 16, 2026
python
python-3.x
windows
python-internals
Why is bytes(lst) slower than bytearray(lst)?
Aug 04, 2026
python
performance
python-internals
What was/is that "void* <unused>" argument for, that some __sizeof__ methods have in CPython?
Aug 03, 2026
python
arguments
cpython
python-internals
How to create and load internal data in Python package
Jul 29, 2026
python
python-3.x
module
package
python-internals
iterating pandas dataframe difference between python 3.5.6 and 3.7.3 [duplicate]
Jul 25, 2026
python
dictionary
python-3.6
python-internals
How does Python interpreter actually interpret a program?
Jul 24, 2026
python
interpreter
python-internals
Understanding sys.getrefcount [duplicate]
Jul 24, 2026
python
python-internals
What the difference between dict_proxy in python2 and mappingproxy in python3?
Jul 16, 2026
python
python-3.x
python-2.x
python-internals
Python __class__()
Jul 16, 2026
python
python-3.x
types
python-internals
object-model
How does Python distinguish explicitly passed None as argument in built-ins
Jul 16, 2026
python
built-in
python-internals
Python: why assigning a literal to multiple variables in a suite results in their pointing to the same address? [duplicate]
Jul 05, 2026
python
python-3.x
integer
identity
python-internals
can I release an imported package to save memory in python?
Jul 03, 2026
python
python-import
python-internals
Causes for inconsistent behavior when adding NaNs to a set
Jul 03, 2026
python
python-3.x
cpython
python-internals
Can't create Race Condition in Python 3.11 using multiple threads
Jun 28, 2026
python
python-3.x
multithreading
python-multithreading
python-internals
What's the benefit of asyncio using weakrefs to keep track of tasks?
Jun 26, 2026
python-asyncio
weak-references
python-internals
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