prerun

library1.1.3pypypi✓ verified 86d ago

Prerun is a Python utility to run commands before another process starts, commonly used for environment setup, health checks, or dependency injection. Current version 1.1.3, released 2024, with occasional updates.

devops

pip install prerun

github ↗package ↗

INSTALL

IMPORT

SIG · PRERUN

prerun

devopspythonv1.1.3

Install

1.9s avg

Import

119ms

Disk

17MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.1.3 · 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 0.132s · 18.6MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.9s · import 0.106s · 19MB

17MB installed

● package 17MB

Code

Verified usage

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

prerun

✓ import prerun

Direct import of top-level module; no subpackages needed.

Basic usage: prerun.run() executes a command sequentially before continuing.

import prerun # Define a command to run before the main process prerun.run(['echo', 'Pre-run setup complete']) # Main process continues after prerun completes print('Main process starting')

prerun --version

Debug

Known issues

gotchaprerun.run() blocks until the command finishes. Do not use for background tasks.

fix

Use threading or subprocess.Popen for async execution.

affects: all

deprecatedThe 'cwd' parameter in prerun.run() is deprecated since 1.1.0; use 'subprocess.Popen' with cwd instead.

fix

Replace with subprocess.Popen(command, cwd=path) if you need a working directory.

affects: >=1.1.0

Errors

Common errors & fixes

AttributeError: module 'prerun' has no attribute 'run'

Older prerun versions (<1.0.0) used a different API or the module was installed incorrectly.

fix

Upgrade: pip install --upgrade prerun. Ensure you have v1.0.0+.

FileNotFoundError: [Errno 2] No such file or directory: '...'

Passing a non-executable string or missing command. prerun.run() expects a command that is in PATH or a full path.

fix

Use a full path or check that the command exists: prerun.run(['/usr/bin/echo', 'test']).

Upgrade

Version history

1.1.3latest on PyPI · released Sep 6, 2024

Audit

Dependencies

No dependency data recorded yet.

Agent activity

4 hits · last 30 days

node

Resources

githubhttps://github.com/sfanxiang/prerun ↗

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