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waitress-serve — Pure Python WSGI HTTP Server. More information: <https://docs.pylonsproject.org/projects/waitress/en

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the waitress-serve command: Pure Python WSGI HTTP Server. More information: <https://docs.pylonsproject.org/projects/waitress/en/latest/runner.html>.

Solution

waitress-serve — Pure Python WSGI HTTP Server. More information: <https://docs.pylonsproject.org/projects/waitress/en/latest/runner.html>.

Run a Python web app:

waitress-serve {{import.path:wsgi_func}}

Listen on port 8080 on localhost:

waitress-serve --listen={{localhost}}:{{8080}} {{import.path:wsgi_func}}

Start waitress on a Unix socket:

waitress-serve --unix-socket={{path/to/socket}} {{import.path:wsgi_func}}

Use 4 threads to process requests:

waitress-serve --threads={{4}} {{import.path:wsgifunc}}

Call a factory method that returns a WSGI object:

waitress-serve --call {{import.path.wsgi_factory}}

Use the HTTPS URL scheme:

waitress-serve --url-scheme={{https}} {{import.path:wsgi_func}}

Code Snippets

Run a Python web app

waitress-serve {{import.path:wsgi_func}}

Listen on port 8080 on localhost

waitress-serve --listen={{localhost}}:{{8080}} {{import.path:wsgi_func}}

Start waitress on a Unix socket

waitress-serve --unix-socket={{path/to/socket}} {{import.path:wsgi_func}}

Use 4 threads to process requests

waitress-serve --threads={{4}} {{import.path:wsgifunc}}

Call a factory method that returns a WSGI object

waitress-serve --call {{import.path.wsgi_factory}}

Context

tldr-pages: common/waitress-serve

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