WebOb 1.8.0

WSGI request and response object

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.

License

WebOb is offered under the MIT-license.

Authors

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

1.8.0 (2018-04-04)

Feature

• request.POST now supports any requests with the appropriate Content-Type. Allowing any HTTP method to access form encoded content, including DELETE, PUT, and others. See https://github.com/Pylons/webob/pull/352

Compatibility

• WebOb is no longer officially supported on Python 3.3 which was EOL’ed on 2017-09-29.

Backwards Incompatibilities

• Many changes have been made to the way WebOb does Accept handling, not just for the Accept header itself, but also for Accept-Charset, Accept-Encoding and Accept-Language. This was a Google Summer of Code project completed by Whiteroses (https://github.com/whiteroses). Many thanks to Google for running GSoC, the Python Software Foundation for organising and a huge thanks to Ira for completing the work. See https://github.com/Pylons/webob/pull/338 and https://github.com/Pylons/webob/pull/335. Documentation is available at https://docs.pylonsproject.org/projects/webob/en/master/api/webob.html

• When calling a @wsgify decorated function, the default arguments passed to @wsgify are now used when called with the request, and not as a start_response

  def hello(req, name):
      return "Hello, %s!" % name
  app = wsgify(hello, args=("Fred",))
  
  req = Request.blank('/')
  resp = req.get_response(app)  # => "Hello, Fred"
  resp2 = app(req) # => "Hello, Fred"
  

  Previously the resp2 line would have failed with a TypeError. With this change there is no way to override the default arguments with no arguments. See https://github.com/Pylons/webob/pull/203

• When setting app_iter on a Response object the content_md5 header is no longer cleared. This behaviour is odd and disallows setting the content_md5 and then returning an iterator for chunked content encoded responses. See https://github.com/Pylons/webob/issues/86

Experimental Features

These features are experimental and may change at any point in the future.

• The cookie APIs now have the ability to set the SameSite attribute on a cookie in both webob.cookies.make_cookie and webob.cookies.CookieProfile. See https://github.com/Pylons/webob/pull/255

Bugfix

• Exceptions now use string.Template.safe_substitute rather than string.Template.substitute. The latter would raise for missing mappings, the former will simply not substitute the missing variable. This is safer in case the WSGI environ does not contain the keys necessary for the body template. See https://github.com/Pylons/webob/issues/345.
• Request.host_url, Request.host_port, Request.domain correctly parse IPv6 Host headers as provided by a browser. See https://github.com/Pylons/webob/pull/332
• Request.authorization would raise ValueError for unusual or malformed header values. See https://github.com/Pylons/webob/issues/231
• Allow unnamed fields in form data to be properly transcoded when calling request.decode with an alternate encoding. See https://github.com/Pylons/webob/pull/309
• Response.__init__ would discard app_iter when a Response had no body, this would cause issues when app_iter was an object that was tied to the life-cycle of a web application and had to be properly closed. app_iter is more advanced API for Response and thus even if it contains a body and is thus against the HTTP RFC’s, we should let the users shoot themselves by returning a body. See https://github.com/Pylons/webob/issues/305