Skip to main content

dumpenv: Dump values of the current Python environment

Project description

dumpenv: Dump values of the current Python environment


Sometimes source code works in one environment, but in a different environment it fails.

Same source code, but different results …. Hmm, there must be a differenence in the environment …. but what?

You can use this tool to dump a lot of values which influence the python interpreter.

Then you can use any diff tool (I like meld) to compare both environments.

At the moment these text files get created:

  • PATH
  • os
  • os_environ
  • pip_freeze
  • platform
  • site
  • sys
  • sys_path

I guess the above names do not need any explanation.

Above files get created in a temporary directory which roughly looks like this:


To make the diff easier to read $VIRTUAL_ENV and $HOME get replaced in the output.



dumpenv [-o OUTPUT_DIRECTORY | --output-directory=OUTPUT_DIRECTORY]
dumpenv (-h | --help)


-o --output-directory OUTPUT_DIRECTORY Create text file in this directory.
                                     Or use environment variable DUMPENV_OUTPUT_DIRECTORY



user1@host1> dumpenv
Dumped environment to directory OUT1

user2@host2> dumpenv
Dumped environment to directory OUT2

me@pc> scp -r user1@host1:/tmp/OUT1/ tmp/
me@pc> scp -r user2@host2:/tmp/OUT2/ tmp/
me@pc> meld tmp/OUT1 tmp/OUT2

… Ah! Now you see the difference :-)


Call it from Python like this:

out_dir = dumpenv.create_data_and_dump_it()


Install from pypi:

pip install dumpenv

Use Cases

Use case 1: Your script works, but it does not, if called via unix cron. Run dumpenv via shell and via cron and compare the result.

Use case 2: Your code works via web (wsgi, django, …) but it fails if you call it on the shell.

Use case 3: Your code works in the development environment, but not on the production server.


In my case Python scripts run in different environments:

  • called from PyCharm
  • called from Shell
  • called from Cron
  • called from wsgi/Django.
  • called from subprocess

My dream is that the environment from all above calls is equal.



Feedback is very welcome, please create an issue at github or write me an email.

Project details

Download files

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

Filename, size & hash SHA256 hash help File type Python version Upload date
dumpenv-2018.13.0.tar.gz (5.1 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page