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10 changes: 7 additions & 3 deletions README.md
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# ChemFormula

![PyPI](https://img.shields.io/pypi/v/ChemFormula)
![pytest](https://github.com/molshape/ChemFormula/actions/workflows/python-app.yml/badge.svg)
![PyPI Version](https://img.shields.io/pypi/v/ChemFormula)
![CI](https://github.com/molshape/ChemFormula/actions/workflows/ci.yml/badge.svg)
![Python Versions](https://img.shields.io/pypi/pyversions/ChemFormula)
![License](https://img.shields.io/github/license/molshape/ChemFormula) \
![GitHub stars](https://img.shields.io/github/stars/molshape/ChemFormula)


<details>
<summary>Table of Content</summary>
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- [*Pure Appl. Chem.*, **2022**, *94*(5), 573-600](https://doi.org/10.1515/pac-2019-0603)
- [*Chem. Int.*, **2025**, *47*(1), 20-20](https://doi.org/10.1515/ci-2025-0105)

The current data has been downloaded from https://iupac.qmul.ac.uk/AtWt/ as of August 2<sup>nd</sup>, 2025. The original data has been mirrored to [/misc/AtWt23.html](https://github.com/molshape/ChemFormula/blob/main/misc/AtWt23.html).
The current data has been downloaded from https://iupac.qmul.ac.uk/AtWt/ as of August 2<sup>nd</sup>, 2025. The original data has been mirrored to [AtWt23.html](https://github.com/molshape/ChemFormula/blob/main/misc/AtWt23.html).

Quoted atomic weights are those suggested for materials where the origin of the sample is unknown. For most radioactive elements the isotope with the longest half-life is quoted as an integer.
2 changes: 1 addition & 1 deletion pyproject.toml
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[project]
name = "chemformula"
version = "1.4.0"
version = "1.4.1"
description = "ChemFormula is a Python class for working with chemical formulas. It allows parsing chemical formulas, generating formatted output strings and calculating formula weights."
readme = "README.md"
authors = [
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2 changes: 1 addition & 1 deletion uv.lock

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