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A utility belt for advanced users of python-requests

Project description

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Description: requests toolbelt
=================

This is just a collection of utilities for `python-requests`_, but don't
really belong in ``requests`` proper. The minimum tested requests version is
``2.1.0``. In reality, the toolbelt should work with ``2.0.1`` as well, but
some idiosyncracies prevent effective or sane testing on that version.


multipart/form-data Encoder
---------------------------

The main attraction is a streaming multipart form-data object, ``MultipartEncoder``.
Its API looks like this:

.. code-block:: python

from requests_toolbelt import MultipartEncoder
import requests

m = MultipartEncoder(
fields={'field0': 'value', 'field1': 'value',
'field2': ('filename', open('file.py', 'rb'), 'text/plain')}
)

r = requests.post('http://httpbin.org/post', data=m,
headers={'Content-Type': m.content_type})


You can also use ``multipart/form-data`` encoding for requests that don't
require files:

.. code-block:: python

from requests_toolbelt import MultipartEncoder
import requests

m = MultipartEncoder(fields={'field0': 'value', 'field1': 'value'})

r = requests.post('http://httpbin.org/post', data=m,
headers={'Content-Type': m.content_type})


Or, you can just create the string and examine the data:

.. code-block:: python

# Assuming `m` is one of the above
m.to_string() # Always returns unicode


User-Agent constructor
----------------------

You can easily construct a requests-style ``User-Agent`` string::

from requests_toolbelt import user_agent

headers = {
'User-Agent': user_agent('my_package', '0.0.1')
}

r = requests.get('https://api.github.com/users', headers=headers)


SSLAdapter
----------

The ``SSLAdapter`` was originally published on `Cory Benfield's blog`_.
This adapter allows the user to choose one of the SSL protocols made available
in Python's ``ssl`` module for outgoing HTTPS connections:

.. code-block:: python

from requests_toolbelt import SSLAdapter
import requests
import ssl

s = requests.Session()
s.mount('https://', SSLAdapter(ssl.PROTOCOL_TLSv1))

cookies/ForgetfulCookieJar
--------------------------

The ``ForgetfulCookieJar`` prevents a particular requests session from storing
cookies:

.. code-block:: python

from requests-toolbelt.cookies import ForgetfulCookieJar

session = requests.Session()
session.cookies = ForgetfulCookieJar()

Known Issues
------------

On Python 3.3.0 and 3.3.1, the standard library's ``http`` module will fail
when passing an instance of the ``MultipartEncoder``. This is fixed in later
minor releases of Python 3.3. Please consider upgrading to a later minor
version or Python 3.4. *There is absolutely nothing this library can do to
work around that bug.*

Contributing
------------

Please read the `suggested workflow
<https://toolbelt.readthedocs.org/en/latest/contributing.html>`_ for
contributing to this project.

.. _Cory Benfield's blog: https://lukasa.co.uk/2013/01/Choosing_SSL_Version_In_Requests/
.. _python-requests: https://github.com/kennethreitz/requests


History
=======

0.5.0 -- 2015-11-24
-------------------

More information about this release can be found on the `milestone
<https://github.com/sigmavirus24/requests-toolbelt/issues?utf8=%E2%9C%93&q=is%3Aall+milestone%3A0.5+>`_
for 0.5.0.

New Features
~~~~~~~~~~~~

- The ``tee`` submodule was added to ``requests_toolbelt.downloadutils``. It
allows you to iterate over the bytes of a response while also writing them
to a file. The ``tee.tee`` function, expects you to pass an open file
object, while ``tee.tee_to_file`` will use the provided file name to open
the file for you.

- Added a new parameter to ``requests_toolbelt.utils.user_agent`` that allows
the user to specify additional items.

- Added nested form-data helper,
``requests_toolbelt.utils.formdata.urlencode``.

- Added the ``ForgetfulCookieJar`` to ``requests_toolbelt.cookies``.

- Added utilities for dumping the information about a request-response cycle
in ``requests_toolbelt.utils.dump``.

- Implemented the API described in the ``requests_toolbelt.threaded`` module
docstring, i.e., added ``requests_toolbelt.threaded.map`` as an available
function.

Fixed Bugs
~~~~~~~~~~

- Now papers over the API differences in versions of requests installed from
system packages versus versions of requests installed from PyPI.

- Allow string types for ``SourceAddressAdapter``.

0.4.0 -- 2015-04-03
-------------------

For more information about this release, please see `milestone 0.4.0
<https://github.com/sigmavirus24/requests-toolbelt/issues?q=milestone%3A0.4>`_
on the project's page.

New Features
~~~~~~~~~~~~

- A naive implemenation of a thread pool is now included in the toolbelt. See
the docs in ``docs/threading.rst`` or on `Read The Docs
<https://toolbelt.readthedocs.org>`_.

- The ``StreamingIterator`` now accepts files (such as ``sys.stdin``) without
a specific length and will properly stream them.

- The ``MultipartEncoder`` now accepts exactly the same format of fields as
requests' ``files`` parameter does. In other words, you can now also pass in
extra headers to add to a part in the body. You can also now specify a
custom ``Content-Type`` for a part.

- An implementation of HTTP Digest Authentication for Proxies is now included.

- A transport adapter that allows a user to specify a specific Certificate
Fingerprint is now included in the toolbelt.

- A transport adapter that simplifies how users specify socket options is now
included.

- A transport adapter that simplifies how users can specify TCP Keep-Alive
options is now included in the toolbelt.

- Deprecated functions from ``requests.utils`` are now included and
maintained.

- An authentication tool that allows users to specify how to authenticate to
several different domains at once is now included.

- A function to save streamed responses to disk by analyzing the
``Content-Disposition`` header is now included in the toolbelt.

Fixed Bugs
~~~~~~~~~~

- The ``MultipartEncoder`` will now allow users to upload files larger than
4GB on 32-bit systems.

- The ``MultipartEncoder`` will now accept empty unicode strings for form
values.

0.3.1 -- 2014-06-23
-------------------

- Fix the fact that 0.3.0 bundle did not include the ``StreamingIterator``

0.3.0 -- 2014-05-21
-------------------

Bug Fixes
~~~~~~~~~

- Complete rewrite of ``MultipartEncoder`` fixes bug where bytes were lost in
uploads

New Features
~~~~~~~~~~~~

- ``MultipartDecoder`` to accept ``multipart/form-data`` response bodies and
parse them into an easy to use object.

- ``SourceAddressAdapter`` to allow users to choose a local address to bind
connections to.

- ``GuessAuth`` which accepts a username and password and uses the
``WWW-Authenticate`` header to determine how to authenticate against a
server.

- ``MultipartEncoderMonitor`` wraps an instance of the ``MultipartEncoder``
and keeps track of how many bytes were read and will call the provided
callback.

- ``StreamingIterator`` will wrap an iterator and stream the upload instead of
chunk it, provided you also provide the length of the content you wish to
upload.

0.2.0 -- 2014-02-24
-------------------

- Add ability to tell ``MultipartEncoder`` which encoding to use. By default
it uses 'utf-8'.

- Fix #10 - allow users to install with pip

- Fix #9 - Fix ``MultipartEncoder#to_string`` so that it properly handles file
objects as fields

0.1.2 -- 2014-01-19
-------------------

- At some point during development we broke how we handle normal file objects.
Thanks to @konomae this is now fixed.

0.1.1 -- 2014-01-19
-------------------

- Handle ``io.BytesIO``-like objects better

0.1.0 -- 2014-01-18
-------------------

- Add initial implementation of the streaming ``MultipartEncoder``

- Add initial implementation of the ``user_agent`` function

- Add the ``SSLAdapter``

Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: License :: OSI Approved
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.2
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: Implementation :: CPython

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