list-reserve 0.4.0

Python builtin list memory allocation library

list-reserve

Python builtin list memory allocation library.

Getting it

pip install list_reserve

capacity

Return allocated list memory size.

from list_reserve import capacity

l = [1, 2, 3]
print(capacity(l)) # 3

reserve

Reserve list memory.

from list_reserve import reserve, capacity

l = []
reserve(l, 10)

print(len(l)) # 0

print(capacity(l)) # 10

shrink_to_fit

since 0.1.0
shrink to fit list capacity.

from list_reserve import capacity, shrink_to_fit

l = list(range(100))

print(capacity(l)) # 118

shrink_to_fit(l)

print(capacity(l)) # 100

Development

This repository ships a Dev Container. Open it in an editor that supports Dev Containers ("Reopen in Container"), or run it headlessly with the Dev Containers CLI:

devcontainer up --workspace-folder .
devcontainer exec --workspace-folder . python -m unittest

The container compiles the C extension on creation, so the tests are runnable immediately. Since list_reserve is a C extension, re-run pip install . after editing src/list_reserve.c.

License

MIT License