PYTHONPATH not working for sudo on GNU/Linux (works for root)

Question

EDIT: Works for root, sudo is the problem. Read below.

I have a directory with my own libraries, e.g. my Python libraries are located at /home/name/lib/py

Answer 1

This should probably be posted somewhere else. But sudo will not process the environment file by default. If you want to invoke that the -i flag should help you out. It will simulate that users initial login.

You may have to play around with where you're putting your variables too. http://linux.die.net/man/8/sudo

Answer 2

Alternatives to manipulating PYTHONPATH:

• virtualenv
• distutils

Answer 3

The same is true for the PATH variable, it's also not carried into the super user environment, even though you're passing the preserve environment flag -E.

I'm using this sudo command now without any other modifications:

sudo -HE env PATH=$PATH PYTHONPATH=$PYTHONPATH ./bin/myscript

Since it's an alternative approach that works (for me) I thought I'd share here.

Answer 4

Another tip:

sudo echo $PYTHONPATH:
    /home/name/lib/py

It won't work. Shell will interpret it like this:

1) expand $PYTHONPATH from env variable for example: /usr/lib/python

2) execute "sudo echo /usr/lib/python"

Answer 5

Follow configuration helps me to run multiple python services in dedicated VENVs on one Centos host

1. Export env variables to separate file, for example /etc/sysconfig/my-app
2. Set EnvironmentFile option in service config

see code below:

-bash-4.2$ sudo vi /etc/sysconfig/my-app

PATH=/usr/local/my-app/env/bin:$PATH
LD_LIBRARY_PATH=/usr/local/my-app/env/lib:$LD_LIBRARY_PATH



-bash-4.2$ sudo vi /etc/systemd/system/my-app.service

[Unit]
Description=my-app daemon
After=network.target


[Service]
EnvironmentFile=/etc/sysconfig/my_app
User=app_user
Group=app_user
Type=simple
ExecStart=/usr/local/my-app/env/bin/python /usr/local/my-app/main.py
Restart=on-failure
RestartSec=5s
PrivateTmp=true

[Install]
WantedBy=multi-user.target

Answer 6

The fix in my case was to remove Defaults !env_reset from sudoers.

But, I had to keep Defaults env_keep += "PYTHONPATH" in sudoers.
I've actually added Defaults env_reset (which resets environment variables), but it still works because of env_keep.

It seems that env_keep and !env_reset conflict with eachother, but that's just a guess.

---

So, the whole process:

1. add export PYTHONPATH=/your/custom/path to ~/.bashrc or /etc/bash.bashrc
2. add PYTHONPATH to Defaults env_keep += "ENV1 ENV2 ..." in sudoers file
3. remove Defaults !env_reset from sudoers file if present