paste

library3.10.1pypypi✓ verified 21d ago

Paste is a comprehensive set of tools for developing, deploying, and managing Web Server Gateway Interface (WSGI) applications. It includes components for serving WSGI applications, handling exceptions, parsing URLs, and more. The current version is 3.10.1, with a release cadence that has slowed down over recent years, focusing on Python 3 compatibility and maintenance.

web-framework http-networking

pip install paste

github ↗package ↗homepage ↗docs ↗

INSTALL

IMPORT

SIG · PASTE

paste

web-frameworkpythonv3.10.1

Install

1.9s avg

Import

142ms

Disk

21MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v3.10.1 · 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 0.138s · 19.8MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.9s · import 0.146s · 20MB

21MB installed

● package 21MB

Code

Verified usage

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

serve

✓ from paste.httpserver import serve

Commonly used to run a WSGI application using Paste's HTTP server.

loadapp

✓ from paste.deploy import loadapp

Used for loading WSGI applications from configuration files.

This quickstart demonstrates how to define a basic WSGI application and serve it using Paste's built-in HTTP server. Run this script and visit http://127.0.0.1:8000 in your browser.

from paste.httpserver import serve def simple_app(environ, start_response): status = '200 OK' headers = [('Content-type', 'text/plain; charset=utf-8')] start_response(status, headers) return [b'Hello, Paste!\n'] if __name__ == '__main__': print("Serving on http://127.0.0.1:8000") serve(simple_app, host='127.0.0.1', port=8000)

paster --version

Debug

Known issues

breakingPython 2 compatibility was completely removed starting with Paste versions 3.7.0 and 3.8.0. If you require Python 2 support, you must use an older version of Paste (e.g., 3.6.1 or earlier).

fix

Upgrade your Python environment to Python 3 or downgrade Paste to a compatible version if Python 2 is unavoidable.

affects: >=3.7.0

gotchaThe `cgi.escape` function, which was deprecated and later removed in Python 3, has been replaced internally by Paste in version 3.10.0. If your application or custom Paste extensions relied on specific behaviors of `cgi.escape` through Paste, inspect `paste.util` for alternatives.

fix

Review usage of `cgi.escape` and consider migrating to `html.escape` or `paste.util`'s implementations if you were explicitly using or extending Paste's `cgi` module wrappers.

affects: >=3.10.0

gotchaBeginning with version 3.10.0, Paste started including `cgitb.Hook` and `cgi.FieldStorage` in `paste.util`. While this provides compatibility, direct reliance on the standard library's `cgi` module for these functions may lead to issues with future Python versions, as the `cgi` module itself is undergoing changes and potential deprecation.

fix

For better long-term compatibility when using `cgitb.Hook` or `cgi.FieldStorage` in conjunction with Paste, consider importing them from `paste.util` instead of the standard `cgi` module.

affects: >=3.10.0

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'paste'

The 'paste' library is not installed in the Python environment, or the Python interpreter cannot find it in its search path.

fix

Install the 'paste' library using pip: `pip install paste`

ImportError: cannot import name deploy

The 'PasteDeploy' component, often used with 'paste' for WSGI application configuration, is either not installed, installed incorrectly, or there's a version incompatibility.

fix

Ensure PasteDeploy is installed and up-to-date: `pip install -U PasteDeploy`

Target WSGI script '...' cannot be loaded as Python module

This generic WSGI error often occurs in environments using PasteDeploy (or other WSGI servers) when the specified WSGI application file (e.g., a .wsgi file) has a syntax error, an internal import error, or cannot be properly located or executed by the WSGI server.

fix

Check the Python code within your WSGI script for syntax errors, missing imports, or incorrect paths. Also, verify that the WSGI script path in your server configuration (e.g., Apache's `WSGIScriptAlias`) is correct and that the file has appropriate permissions.

Upgrade

Version history

3.10.1latest on PyPI · released May 1, 2024

Audit

Dependencies

No dependency data recorded yet.

Agent activity

3 hits · last 30 days

node

Resources

githubhttps://github.com/pasteorg/paste ↗

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

homepagehttps://pythonpaste.readthedocs.io/ ↗

docshttps://pythonpaste.readthedocs.io ↗