uber/h3-py

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Python bindings for H3, a hierarchical hexagonal geospatial indexing system

Stars: 1k
Forks: 144
Open beginner issues: 0
Indexed issues: 80
Avg merge: 7d 14h
Merged PRs (30d): 2

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

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80 open issues indexed

h3.grid_ring fails for non-pentagon root cells Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

uber/h3-py#503 · 4 comments · Opened Aug 27, 2026
The int APIs pay ~18% of every scalar call for an identity `_out_scalar` wrapper Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

uber/h3-py#501 · Opened Aug 24, 2026
`grid_path_cells` can fail Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

uber/h3-py#487 · 1 comment · 2 reactions · Opened Apr 6, 2026
child_pos_to_cell arguments are not consistent with C Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

uber/h3-py#469 · 3 comments · Opened Nov 8, 2025
Plan to support ijk coordinates conversion? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

uber/h3-py#467 · 1 comment · Opened Oct 6, 2025
Add format_as_geojson option to cell_to_boundary() Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

uber/h3-py#454 · 3 comments · Opened May 13, 2025
Cmake update appears to break compilation Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

uber/h3-py#453 · 6 comments · Opened Mar 28, 2025
python3.9 Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

uber/h3-py#449 · 1 comment · Opened Mar 4, 2025
Unable to convert cell Id to lat lng Open

Difficulty 3/5 1-2 days Newbie friendliness 28/100

uber/h3-py#448 · 4 comments · 1 reaction · Opened Mar 4, 2025
Bug plotting polygon of logical children of polygons Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#401 · 5 comments · Opened Sep 26, 2024
Fix usage of Cython API and Cython tests Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 35/100

uber/h3-py#396 · 3 comments · Opened Sep 4, 2024
Fix Cython annotation building Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#382 · Opened Jun 22, 2024
Example repo for a cython package that cimports h3-py Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 35/100

uber/h3-py#373 · 2 comments · Opened May 19, 2024
Handle point objects with __geo_interface__ Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

uber/h3-py#370 · Opened May 17, 2024
h3.polyfill fails for simple polygon, works for subpolygon Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

uber/h3-py#343 · Opened Feb 19, 2024
What is the status / plan for vectorized APIs? Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

uber/h3-py#341 · 14 comments · 4 reactions · Opened Jan 14, 2024
Support PEP 517 builds Open

help wanted

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#340 · 3 comments · Opened Jan 8, 2024
Combine coverage from symlinked API files Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#336 · Opened Jan 1, 2024
Output type for Vectorized h3.geo_to_h3() Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

uber/h3-py#328 · Opened Nov 30, 2023
Missing library stubs MYPY Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#327 · 4 comments · 10 reactions · Opened Nov 17, 2023
on Macos, new h3 install creates segmentation fault Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#313 · 7 comments · 7 reactions · Opened Feb 20, 2023
H3ResDomainError using `compact_cells` in v4 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#312 · 1 comment · Opened Feb 9, 2023
H3 py conda forge packaging for apple silicon Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

uber/h3-py#311 · 1 comment · Opened Feb 6, 2023
vectorized polyfill Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

uber/h3-py#309 · 2 comments · Opened Jan 25, 2023
quadkey to h3 Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

uber/h3-py#308 · 1 comment · Opened Jan 25, 2023
API: the `geo_json_conformant` argument of `polygon_to_cells` is missing in v4 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

uber/h3-py#307 · 5 comments · 9 reactions · Opened Jan 14, 2023
'latlng_to_cell' function is deprecated, but still referred to in the API docs and readme Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

uber/h3-py#306 · 6 comments · Opened Jan 12, 2023
BUG: `h3.api.(basic|numpy|memview)_int` can't be loaded via `__import__` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

uber/h3-py#304 · 4 comments · Opened Dec 17, 2022
Issues with using H3 package on Lambda Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

uber/h3-py#303 · 7 comments · 1 reaction · Opened Dec 16, 2022
Algorithm implementation of polyfill Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

uber/h3-py#300 · 6 comments · Opened Nov 29, 2022
Conda installation fails with PackagesNotFoundError Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

uber/h3-py#288 · 1 comment · 1 reaction · Opened Oct 7, 2022
v4 Python Bindings: h3.Polygon has no "len()" Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

uber/h3-py#284 · 12 comments · Opened Sep 13, 2022
v4 docs Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

uber/h3-py#281 · Opened Aug 23, 2022
Remove geo_json stuff from cell_to_boundary Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

uber/h3-py#279 · 1 comment · Opened Aug 23, 2022
H3 h3_set_to_multi_polygon generates overlapping lines / repeat points for some sets of input Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

uber/h3-py#277 · 5 comments · Opened Aug 21, 2022
Is it possible to make the Cython functions callable from Cython or Numba? Missing __pyx_capi__ attribute. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#273 · 5 comments · Opened Aug 15, 2022
Remove Python exceptions from Cython code? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

uber/h3-py#267 · Opened Jul 24, 2022
v4.0 input validation philosophy Open

v4

Difficulty 5/5 Over a week Newbie friendliness 15/100

uber/h3-py#266 · Opened Jul 2, 2022
Use bint instead of bool for Cython functions Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

uber/h3-py#265 · Opened Jul 1, 2022
Traversing the globe at one resolution Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

uber/h3-py#264 · 3 comments · Opened Jun 9, 2022
Compiling from source Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

uber/h3-py#262 · 4 comments · Opened Jun 7, 2022
Build wheels from sdist instead of source directory Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

uber/h3-py#256 · Opened Jun 2, 2022
v4: improve memory management tooling Open

v4

uber/h3-py#249 · 1 comment · 1 assignee · Opened May 25, 2022
v4.0: Remove `setup.py` in favor of `pyproject.toml`? Open

v4

Difficulty 4/5 3-5 days Newbie friendliness 35/100

uber/h3-py#247 · 1 comment · Opened May 25, 2022
v4.0 release (tracking task) Open

v4

uber/h3-py#244 · 1 comment · 1 assignee · Opened May 25, 2022
v4 error handling Open

v4

uber/h3-py#243 · 1 comment · 1 assignee · Opened May 25, 2022
Remove Python 2.7 support for h3 4.0 Open

v4

Difficulty 5/5 Over a week Newbie friendliness 25/100

uber/h3-py#242 · 1 comment · Opened May 23, 2022
Functions on collections of input Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

uber/h3-py#237 · 12 comments · Opened May 11, 2022
Discuss typing of Cython API Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

uber/h3-py#236 · 2 comments · 1 reaction · Opened Apr 25, 2022
Update badges on readme for v3.7.4, and list Py 3.10 as supported version Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

uber/h3-py#231 · Opened Apr 15, 2022

uber/h3-py

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