ChemFormula is a Python library for working with chemical formulas. It supports parsing formulas, generating formatted output strings, calculating molecular weights and weight distributions, and performing arithmetic operations on ChemFormula objects.
active 2023-08-15 → 2026-03-13 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 942 days from 2023-08-15 to 2026-03-13. Pushes: 15 total, peak 11 in a day. Pull requests: 7 total, peak 4 in a day. Issues: 5 total, peak 2 in a day. Comments: 8 total, peak 2 in a day. Stars: 13 total, peak 3 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| molshape | 28 | 15 | 6 | 5 |
| lcnittl | 2 | 0 | 0 | 0 |
| HLinde | 2 | 0 | 0 | 2 |
| MarkusWeisser | 2 | 0 | 0 | 1 |
Recent activity
Latest issues, pull requests and releases
- Issue comment#16molshape2026-03-13 03:50add workflow for trusted publishing
- Issue comment#16HLinde2026-03-12 16:08add workflow for trusted publishing
- Pull request#24molshape2025-11-01 12:09
- Pull request#22molshape2025-11-01 08:05
- Issue comment#20MarkusWeisser2025-09-15 06:49Deuterium and Tritium
- Releasemolshape2025-09-14 13:56Update 1.5.0
- Issue#14molshape2025-09-14 13:47Addition of Named Isotopes
- Issue comment#20molshape2025-09-14 13:46Deuterium and Tritium
- Issue#20molshape2025-09-14 13:46Deuterium and Tritium
- Issue#20MarkusWeisser2025-08-21 14:41Deuterium and Tritium
- Issue comment#16HLinde2025-08-04 08:21add workflow for trusted publishing
- Issue comment#16molshape2025-08-02 12:46add workflow for trusted publishing
- Releasemolshape2025-08-02 12:32Update v1.4.1
- Releasemolshape2025-08-02 11:41Update v1.4.0
- Releasemolshape2025-08-02 11:27Update v1.4.0
- Releasemolshape2025-08-02 11:26Update v1.4.0
- Releasemolshape2025-08-02 11:10Update v1.4.0
- Releasemolshape2025-08-02 10:37Update 1.4.0
- Pull request#18molshape2025-08-02 10:31
- Pull request#18molshape2025-08-02 10:28
- Pull request#17molshape2025-08-02 10:20
- Pull request#16molshape2025-08-02 07:14
- Pull request#16HLinde2025-07-21 14:20
- Issue comment#15molshape2024-09-07 09:24Python Packaging
- Issue comment#14molshape2024-09-07 08:59Addition of Named Isotopes
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 13 stars here means stars gained during the window, not the repo's star count.