Skip to main content

A utility belt for advanced users of python-requests

Project 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:

from requests_toolbelt import MultipartEncoder
import requests

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

r ='', data=m,
                  headers={'Content-Type': m.content_type})

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

from requests_toolbelt import MultipartEncoder
import requests

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

r ='', data=m,
                  headers={'Content-Type': m.content_type})

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

# 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('', headers=headers)


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:

from requests_toolbelt import SSLAdapter
import requests
import ssl

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


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

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

requests-toolbelt-0.3.0.tar.gz (13.6 kB view hashes)

Uploaded Source

Built Distribution

requests_toolbelt-0.3.0-py2.py3-none-any.whl (20.7 kB view hashes)

Uploaded Python 2 Python 3

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page