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WSGI request and response object

Project description Documentation Status

WebOb provides objects for HTTP requests and responses. Specifically it does this by wrapping the WSGI request environment and response status/headers/app_iter(body).

The request and response objects provide many conveniences for parsing HTTP request and forming HTTP responses. Both objects are read/write: as a result, WebOb is also a nice way to create HTTP requests and parse HTTP responses.

Support and Documentation

See the WebOb Documentation website to view documentation, report bugs, and obtain support.


WebOb is offered under the MIT-license.


WebOb was authored by Ian Bicking and is currently maintained by the Pylons Project and a team of contributors.

1.7rc1 (2016-11-18)


  • WebOb is no longer supported on Python 2.6 and PyPy3 (due to pip no longer supporting Python 3.2 even on PyPy)

Backwards Incompatibility

  • Response.set_cookie no longer accepts a key argument. This was deprecated in WebOb 1.5 and as mentioned in the deprecation, is being removed in 1.7

  • Response __init__ will no longer set the default Content-Type, nor Content-Length on Responses that don’t have a body. This allows WebOb to return proper responses for things like Response(status=’204 No Content’).

  • Response.text will no longer raise if the Content-Type does not have a charset, it will fall back to using the new default_body_encoding. To get the old behaviour back please sub-class Response and set default_body_encoding to None. See

  • WebOb no longer supports Chunked Encoding, this means that if you are using WebOb and need Chunked Encoding you will be required to have a proxy that unchunks the request for you. Please read for more background.



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