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vcrpy/docs/installation.rst
Josh Peak 4a8e80ee3e v4.0.x - Remove legacy python and add python3.8 support (#499)
* Drop support for legacy Python 2.7

* Upgrade Python syntax with pyupgrade --py3-plus

* Trim testing matrix to remove python2

* re-enable python3.8 in travis as tests that are not allowed to fail

* Remove some six

* The future is now

* Remove Python 2 imports

* Add back example, but change py27 to py36

* Remove redundant compat.py

* Blacken

* Credit hugovk in changelog

WIP Updating Sphinx Docs and AutoDoc

* Fix AutoDoc and update Sphinx theme to python_doc_theme

* Fix #420, autodoc even undocumented (docstring-less) method signatures

* Doc theme 'nature'. Add global TOC to doc sidebar

* Comment last reference to package six

* Changelog is now a consistent format

* Yet another documentation fix for links and title hierarchy

* Start work on new SVG logo

test SVG in README

trying to test new SVG logo in README

Apply centering

Apply readme logo centering

Trying to align image

Trying random shit

trying align right

add emoji

Large logo has higher priority

Change title hierarchy

Actually use a H1

Try again

try and organise badges

revert link back to point at master

* updated new take on VCR logo as SVG code

* Testing modern logo in docs

* Add sanitize for rendering SVG

* Switch to alabaster theme

* Update vcrpy logo (#503)

* Add credit for V4 logo changes.

* Add rewind and play animation

* Add svg into ReadTheDocs static assets so that it can be hosted so the animations work.

* Need to embedd the SVG for ReadTheDocs somewhere so I can get the link to later embed in the README

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: Sean Bailey <sean@seanbailey.io>
2019-12-20 11:45:07 +11:00

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Installation
============
VCR.py is a package on `PyPI <https://pypi.python.org>`__, so you can install
with pip::
pip install vcrpy
Compatibility
-------------
VCR.py supports Python 3.5+, and `pypy <http://pypy.org>`__.
The following HTTP libraries are supported:
- ``aiohttp``
- ``boto``
- ``boto3``
- ``http.client``
- ``httplib2``
- ``requests`` (both 1.x and 2.x versions)
- ``tornado.httpclient``
- ``urllib2``
- ``urllib3``
Speed
-----
VCR.py runs about 10x faster when `pyyaml <http://pyyaml.org>`__ can use the
`libyaml extensions <http://pyyaml.org/wiki/LibYAML>`__. In order for this to
work, libyaml needs to be available when pyyaml is built. Additionally the flag
is cached by pip, so you might need to explicitly avoid the cache when
rebuilding pyyaml.
1. Test if pyyaml is built with libyaml. This should work::
python -c 'from yaml import CLoader'
2. Install libyaml according to your Linux distribution, or using `Homebrew
<http://mxcl.github.com/homebrew/>`__ on Mac::
brew install libyaml # Mac with Homebrew
apt-get install libyaml-dev # Ubuntu
dnf install libyaml-devel # Fedora
3. Rebuild pyyaml with libyaml::
pip uninstall pyyaml
pip --no-cache-dir install pyyaml
Upgrade
-------
New Cassette Format
~~~~~~~~~~~~~~~~~~~
The cassette format has changed in *VCR.py 1.x*, the *VCR.py 0.x*
cassettes cannot be used with *VCR.py 1.x*. The easiest way to upgrade
is to simply delete your cassettes and re-record all of them. VCR.py
also provides a migration script that attempts to upgrade your 0.x
cassettes to the new 1.x format. To use it, run the following command::
python -m vcr.migration PATH
The PATH can be either a path to the directory with cassettes or the
path to a single cassette.
*Note*: Back up your cassettes files before migration. The migration
*should* only modify cassettes using the old 0.x format.
New serializer / deserializer API
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If you made a custom serializer, you will need to update it to match the
new API in version 1.0.x
- Serializers now take dicts and return strings.
- Deserializers take strings and return dicts (instead of requests,
responses pair)
Ruby VCR compatibility
----------------------
VCR.py does not aim to match the format of the Ruby VCR YAML files.
Cassettes generated by Ruby's VCR are not compatible with VCR.py.