forformat

forformat formats free-form Fortran source files. It provides findent-compatible indentation, plus an optional full-format mode for selected lexical normalization and wrapping.

The package installs the forformat command. It requires Python 3.9 or newer and does not provide an importable Python formatting API.

Install

python -m pip install forformat

Use

Format one or more Fortran files in place:

forformat src/module.f90
forformat src/*.f90

Use standard input and output in a pipeline:

forformat --stdin < src/module.f90 > /tmp/module.f90
forformat --stdout src/module.f90 > /tmp/module.f90

Use --check in CI to fail when files need formatting, or --diff to print unified diffs:

forformat --check src/*.f90
forformat --diff src/*.f90

Project context

When you pass explicit paths, forformat scans the current Git checkout for free-form Fortran sources and uses declarations from those files to resolve names while formatting. Only the paths you pass are changed. This project-aware behavior is useful when a declaration in one module controls the spelling or formatting of code in another file.

For independent file processing, use --isolated with explicit paths:

forformat --isolated src/module.f90
forformat --isolated --stdout src/module.f90 > /tmp/module.f90

Input from standard input is also processed without a repository scan:

forformat --stdin < src/module.f90 > /tmp/module.f90

Example profile

This profile mirrors the indentation settings used by CAMB. The final --indent-contains=restart setting is intentional; options may be written with hyphens or underscores.

forformat \
	--full \
	--indent=4 \
	--indent-module=0 \
	--indent-procedure=0 \
	--start-indent=4 \
	--indent-contains=0 \
	--openmp=0 \
	--indent-contains=restart \
	--indent-select=4 \
	--indent-case=4 \
	--indent-interface=0 \
	--indent-continuation=4 \
	--indent-ampersand \
	src/*.f90

The default is --full. Use --indent-only for findent-compatible indentation and trailing whitespace handling. Run forformat --help for all options. Fixed-form Fortran and automatic format detection are not supported.

Project links

Data verified by PyPI on Aug 14, 2026
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  • Released:
Newer release available (0.1.3)

1 maintainer

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Avatar for cmbant from gravatar.com cmbant

Credits

Author: Antony Lewis

GitHub Statistics

Data verified by PyPI on Aug 14, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

BSD-3-Clause
View SPDX License List

Requires

Python >=3.9

Classifiers

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