What's New in WebOb 1.8 — WebOb 1.8.7 documentation

# What's New in WebOb 1.8

## 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.

  Please pin to WebOb~=1.7 which was tested against Python 3.3, and upgrade your Python version.

## 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.

  If you were previously using the `Accept` class or the `MIMEAccept` class directly, please take a look at the documentation for `create_accept_header()`, `create_accept_charset_header()`, `create_accept_encoding_header()` and `create_accept_language_header()`.

  These functions will accept a header value and create the appropriate object.

  The API documentation for Accept* provides more information on the available API.

- 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 main page provides a list of Experimental API supported by WebOb.

- 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

- `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. Now it simply returns an empty value. 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 in the foot by returning a body. See https://github.com/Pylons/webob/issues/305