• Keys in the Headers dictionary are now native strings on all Python versions, i.e. bytestrings on Python 2, unicode on Python 3.
• Proxy URLs now must have an explicit scheme. A MissingSchema exception will be raised if they don’t.
• Timeouts now apply to read time if Stream=False.
• RequestException is now a subclass of IOError, not RuntimeError.
• Added new method to PreparedRequest objects: PreparedRequest.copy().
• Added new method to Session objects: Session.update_request(). This method updates a Request object with the data (e.g. cookies) stored on the Session.
• Added new method to Session objects: Session.prepare_request(). This method updates and prepares a Request object, and returns the corresponding PreparedRequest object.
• Added new method to HTTPAdapter objects: HTTPAdapter.proxy_headers(). This should not be called directly, but improves the subclass interface.
• httplib.IncompleteRead exceptions caused by incorrect chunked encoding will now raise a Requests ChunkedEncodingError instead.
• Invalid percent-escape sequences now cause a Requests InvalidURL exception to be raised.
• HTTP 208 no longer uses reason phrase "im_used". Correctly uses "already_reported".
• HTTP 226 reason added ("im_used").

Bugfixes:

• Vastly improved proxy support, including the CONNECT verb. Special thanks to the many contributors who worked towards this improvement.
• Cookies are now properly managed when 401 authentication responses are received.
• Chunked encoding fixes.
• Support for mixed case schemes.
• Better handling of streaming downloads.
• Retrieve environment proxies from more locations.
• Minor cookies fixes.
• Imroved redirect behaviour.
• Improved streaming behaviour, particularly for compressed data.
• Miscellaneous small Python 3 text encoding bugs.
• .netrc no longer overrides explicit auth.
• Cookies set by hooks are now correctly persisted on Sessions.
• Fix problem with cookies that specify port numbers in their host field.
• BytesIO can be used to perform streaming uploads.
• More generous parsing of the no_proxy environment variable.
• Non-string objects can be passed in data values alongside files.

• Python 3.3.2 compatibility
• Always percent-encode location headers
• Fix connection adapter matching to be most-specific first
• new argument to the default connection adapter for passing a block argument
• prevent a KeyError when there’s no link headers

1.2.0 (2013-03-31)¶

• Fixed cookies on sessions and on requests
• Significantly change how hooks are dispatched - hooks now receive all the arguments specified by the user when making a request so hooks can make a secondary request with the same parameters. This is especially necessary for authentication handler authors
• certifi support was removed
• Fixed bug where using OAuth 1 with body signature_type sent no data
• Major proxy work thanks to @Lukasa including parsing of proxy authentication from the proxy url
• Fix DigestAuth handling too many 401s
• Update vendored urllib3 to include SSL bug fixes
• Allow keyword arguments to be passed to json.loads() via the Response.json() method
• Don’t send Content-Length header by default on GET or HEAD requests
• Add elapsed attribute to Response objects to time how long a request took.
• Fix RequestsCookieJar
• Sessions and Adapters are now picklable, i.e., can be used with the multiprocessing library
• Update charade to version 1.0.3

The change in how hooks are dispatched will likely cause a great deal of issues.

1.1.0 (2013-01-10)¶

• CHUNKED REQUESTS
• Support for iterable response bodies
• Assume servers persist redirect params
• Allow explicit content types to be specified for file data
• Make merge_kwargs case-insensitive when looking up keys

• Massive Refactor and Simplification
• Switch to Apache 2.0 license
• Swappable Connection Adapters
• Mountable Connection Adapters
• Mutable ProcessedRequest chain
• /s/prefetch/stream
• Removal of all configuration
• Standard library logging
• Make Response.json() callable, not property.
• Usage of new charade project, which provides python 2 and 3 simultaneous chardet.
• Removal of all hooks except ‘response’
• Removal of all authentication helpers (OAuth, Kerberos)

• Support for (key, value) lists everywhere.
• Digest Authentication improvements.
• Ensure proxy exclusions work properly.
• Clearer UnicodeError exceptions.
• Automatic casting of URLs to tsrings (fURL and such)
• Bugfixes.

• Use simplejson if available.
• Do not hide SSLErrors behind Timeouts.
• Fixed param handling with urls containing fragments.
• Significantly improved information in User Agent.
• client certificates are ignored when verify=False

• Removal of Requests.async in favor of grequests
• Allow disabling of cookie persistiance.
• New implimentation of safe_mode
• cookies.get now supports default argument
• Session cookies not saved when Session.request is called with return_response=False
• Env: no_proxy support.
• RequestsCookieJar improvements.
• Various bug fixes.

• New Response.json property.
• Ability to add string file uploads.
• Fix out-of-range issue with iter_lines.
• Fix iter_content default size.
• Fix POST redirects containing files.

• EXPERIMENTAL OAUTH SUPPORT!
• Proper CookieJar-backed cookies interface with awesome dict-like interface.
• Speed fix for non-iterated content chunks.
• Move pre_request to a more usable place.
• New pre_send hook.
• Lazily encode data, params, files.
• Load system Certificate Bundle if certify isn’t available.
• Cleanups, fixes.

0.11.2 (2012-04-22)¶

• Attempt to use the OS’s certificate bundle if certifi isn’t available.
• Infinite digest auth redirect fix.
• Multi-part file upload improvements.
• Fix decoding of invalid %encodings in URLs.
• If there is no content in a response don’t throw an error the second time that content is attempted to be read.
• Upload data on redirects.

• Vastly improved URL quoting.
• Additional allowed cookie key values.
• Attempted fix for “Too many open files” Error
• Replace unicode errors on first pass, no need for second pass.
• Append ‘/’ to bare-domain urls before query insertion.
• Exceptions now inherit from RuntimeError.
• Binary uploads + auth fix.
• Bugfixes.

• PYTHON 3 SUPPORT!
• Dropped 2.5 Support. (Backwards Incompatible)

• Response.content is now bytes-only. (Backwards Incompatible)
• New Response.text is unicode-only.
• If no Response.encoding is specified and chardet is available, Respoonse.text will guess an encoding.
• Default to ISO-8859-1 (Western) encoding for “text” subtypes.
• Removal of

• Asynchronous async.send method.
• Support for proper chunk streams with boundaries.
• session argument for Session classes.
• Print entire hook tracebacks, not just exception instance.
• Fix response.iter_lines from pending next line.
• Fix but in HTTP-digest auth w/ URI having query strings.
• Fix in Event Hooks section.
• Urllib3 update.

• Keep-alive support!
• Complete removal of Urllib2
• Complete removal of Poster
• Complete removal of CookieJars
• New ConnectionError raising
• Safe_mode for error catching
• prefetch parameter for request methods
• OPTION method
• Async pool size throttling
• File uploads send real names
• Vendored in urllib3

• New callback hook system
• New persistient sessions object and context manager
• Transparent Dict-cookie handling
• Status code reference object
• Removed Response.cached
• Added Response.request
• All args are kwargs
• Relative redirect support
• HTTPError handling improvements
• Improved https testing
• Bugfixes

0.5.1 (2011-07-23)¶

• International Domain Name Support!
• Access headers without fetching entire body (read())
• Use lists as dicts for parameters
• Add Forced Basic Authentication
• Forced Basic is default authentication type
• python-requests.org default User-Agent header
• CaseInsensitiveDict lower-case caching
• Response.history bugfix

0.5.0 (2011-06-21)¶

• PATCH Support
• Support for Proxies
• HTTPBin Test Suite
• Redirect Fixes
• settings.verbose stream writing
• Querystrings for all methods
• URLErrors (Connection Refused, Timeout, Invalid URLs) are treated as explicity raised r.requests.get('hwe://blah');r.raise_for_status()

• • Response.__nonzero__ (false if bad HTTP Status)
  • Response.ok (True if expected HTTP Status)
  • Response.error (Logged HTTPError if bad HTTP Status)
  • Response.raise_for_status() (Raises stored HTTPError)