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requirementslib

library3.0.0pypypiunverified

A Python library for converting between pip-style requirements and Pipfile/Pipfile.lock formats. Version 3.0.0 is a major overhaul that replaced attrs with pydantic for validation. Maintained irregularly.

data serialization devops

pip install requirementslib

github ↗package ↗

INSTALL

IMPORT

SIG · REQUIREMENTSLIB

requirementslib

datapythonv3.0.0

Install

5.1s avg

Import

—

Disk

36MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v3.0.0 · 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 0.000s · 33.3MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 5.1s · import 0.000s · 33MB

36MB installed

● package 36MB

Code

Verified usage

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

Requirement

✓ from requirementslib import Requirement

✗ from requirementslib import Requirement

Basic usage: creating a Requirement from a pip line and loading a Pipfile.

from requirementslib import Requirement, Pipfile # Parse a single requirement req = Requirement.from_line('requests==2.31.0') print(req.as_line()) # Load a Pipfile pf = Pipfile.load('Pipfile') print(pf.sections)

Debug

Known issues

breakingIn v3.0.0, the internal validation changed from attrs to pydantic. Custom Requirement subclasses or direct attribute manipulation may break. The public API (from_line, as_line, etc.) remains the same.

fix

Ensure code does not rely on attrs internals. Use public methods for serialization/deserialization.

affects: >=3.0.0

deprecatedThe 'requirementslib.models' submodule is removed in v3. Import directly from requirementslib instead.

fix

Replace 'from requirementslib.models import ...' with 'from requirementslib import ...'.

affects: >=3.0.0

gotchaPackage name handling: Requirement.from_line('MyPackage') will lowercase the name. Use the 'name' property to get the canonical normalized name.

fix

Access req.name for normalized form; use req.as_line() to preserve original casing in output if needed.

affects: all

Upgrade

Version history

3.0.0latest on PyPI · released Jun 18, 2023

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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Resources

githubhttps://github.com/sarugaku/requirementslib ↗

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