fypp

library3.2pypypi✓ verified 91d ago

Fypp is a Python-powered Fortran preprocessor. It is a tool for generating Fortran source code from template files using a Python-like macro language. The current version is 3.2, with moderate release cadence (major versions every few years).

devops serialization

pip install fypp

github ↗package ↗

INSTALL

IMPORT

SIG · FYPP

fypp

devopspythonv3.2

Install

1.5s avg

Import

63ms

Disk

16MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v3.2 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.066s · 18MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.5s · import 0.060s · 18MB

16MB installed

● package 16MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

fypp

✓ import fypp

fypp is a command-line tool, not typically imported as a library.

Quickstart: process a template file with fypp.

# fypp is used as a command-line tool, not typically imported. # Example: run 'fypp -o output.f90 input.fpp'

fypp --version

Debug

Known issues

breakingVersion 3.0 introduced backwards incompatibilities in macro syntax and variable handling. Upgrade requires reviewing templates.

fix

Consult the changelog: https://github.com/aradi/fypp/releases/tag/3.0

affects: >=3.0

deprecatedThe old macro call syntax (e.g., @:func()) is deprecated in favour of Fortran-friendly calls (e.g., @:func(...)).

fix

Use parentheses for macro calls: @:macro(args)

affects: >=3.0

gotchaThe _FILE_ and _THIS_FILE_ variables are now relative to the file-var-root; may change output paths.

fix

Use --file-var-root to control the root for relative paths.

affects: >=3.2

gotchafypp is not a Python library to import; it is a command-line preprocessor. Attempting to import fypp in Python code will not work as expected.

fix

Run from command line: fypp -o output input

affects: all

Errors

Common errors & fixes

fypp: error: argument -o/--output: expected one argument

Missing output filename after -o flag.

fix

Provide output file: fypp -o output.f90 input.fpp

import fypp ModuleNotFoundError: No module named 'fypp'

fypp is installed but not importable as a regular Python module (it's a script).

fix

Use the command line: fypp --help

fypp: error: unrecognized arguments: --file-var-root

Using --file-var-root with fypp < 3.2.

fix

Upgrade fypp: pip install --upgrade fypp

Upgrade

Version history

3.2latest on PyPI · released Aug 22, 2023

Audit

Dependencies

No dependency data recorded yet.

Agent activity

16 hits · last 30 days

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Resources

githubhttps://github.com/aradi/fypp ↗

packagehttps://pypi.org/project/fypp/ ↗