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Python environment comparison tool.

Project description


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:alt: Documentation Status

Python environment comparison tool. Maximized for compatibility between versions 2.6 to 3.7, pypy, operating systems, distributions, and forks! Virtualenv, pyenv, pyvenv, conda, system!

Command Usage

From the command line, to get information on the current environment:

python -m

Serialize the information to a file...

python -m my_environment.json

Switch to another environment (you'll need pyenvdiff installed in both)

python -m my_environment.json

Or compare two from any environment

python -m my_environment.json my_other_environment.json

Programmatic Usage
.. code-block:: python

>>> from pyenvdiff import Environment

>>> e = Environment()
>>> e.to_file('my_env.json')

>>> o = Environment.from_file('other_env.json')

>>> e == o

>>> print(e)
... # prints a dump of the environment details

>>> from pyenvdiff import EnvironmentDiff
>>> ed = EnvironmentDiff(e, o)
>>> print(ed)
... # prints a diff of the two environments

Web Usage

An alpha-level web-based comparison tool is available to browse and compare. PyEnvDiff ships with a default API Key, which is severly throttled. Some jerk is likely to abuse it, but until then, try it out.

Get a `free personal API Key`_.

Install your own API key by setting a global environment variable "PYENVDIFF_API_KEY", set to the api key.

From any two python interpreters, you can run:

python -m pyenvdiff.public_post --email


python -m pyenvdiff.public_post --domain

...for more optional meta data fields:

python -m pyenvdiff.public_post -h

Which should output... something like the below, (once for each environment you run it).

Posting environment information to
Using API KEY: ...
Successful POST, use SHA XXXX for reference or comparison.

Then, use that SHA to fill in the link below:

After you've collected another SHA from another environment...use the link format below,
where XXXX and YYYY are two relevant SHAs.

Sooo much room for activities!

* Compare dev, test & prod!
* Works on my machine, strange it doesn't work on yours
* Confirming deployments
* Auditing user desktops, servers, research environments & ecosystems
* Filing (or requesting) bug reports


There are no manditory, nor automatically installing, dependencies.

pip install pyenvdiff

OR just copy & paste pyenvdiff anywhere on PYTHONPATH

There is one optional dependency. The core functionality doesn't use it. It's only needed for more advanced HTML-based comparison.

pip install ghdiff

Under the hood

* Zero dependency, pure-python, harmless `pip install pyenvdiff` or copy anywhere on PYTHONPATH.
* As-needed import statements, to maximize compatibility across python flavours.
* Favours compatible python-code over succinct or newer-style python-code
* Free software: BSD license
* Documentation:


This package was started with Cookiecutter_ and the `audreyr/cookiecutter-pypackage`_ project template.

.. _`free personal API Key`:
.. _Cookiecutter:
.. _`audreyr/cookiecutter-pypackage`:


0.2.0 (2018-06-8)
* Refactor into to account for regression in cpython micro release (#5) [PR #6]
* Change file format from yaml to json with sorted keys (#4) [PR #7]
* Remove as default server. [PR #8]
* Simplify user-created custom Collector. [PR #8]
* Enable user-created custom POST command. [PR #8]
* Add more Collectors (OSEnviron, UserName, HomeDirectory, SysPrefix). [PR #9]
* Add transparency to systematically disclose what information is collected. [PR #9]
* Add invasive property [PR #9]
* Make compatible with pip 10. [PR #10]
* Enhance PipDistribution output. [PR #10]

0.1.0 (2016-12-24)

* First release on PyPI.

Project details

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