在 shell 脚本中运行 python3 时出现 ModulesNotFound 错误

Question

I have my python3 path under /usr/bin , any my pip path under /.local/bin of my local repository. With some pip modules installed, I can run my code successfully through python3 mycode.py .

But I tried to run the shell script:

#!/usr/bin
echo "starting now..."
nohup python3 mycode.py > log.txt 2>&1 &
echo $! > pid
echo "mycode.py started at pid: "
cat pid

and my python code:

mycode.py

#!/usr/bin/env python3
from aiocqhttp import CQHttp, Event, Message, MessageSegment
...
...
...

It gives me:

Traceback (most recent call last):
  File "mycode.py", line 2, in <module>
    from aiocqhttp import CQHttp, Event, Message, MessageSegment
ModuleNotFoundError: No module named 'aiocqhttp'

I tried to replace the interpreter of the shell script with my local path, but it doesn't help. How should I run my python codes using the shell script?

Answer 1

In your case, the aiocqhttp was installed in your home directory, and when you invoke the script by sudo , python3 will not be able to know to search in your home (because it is root that is running the process). You may solve it using these two approaches:

Method 1:

sudo -H pip3 install -U aiocqhttp

Install this module system-wide so that every user can find it.

Method 2:

sudo PYTHONPATH=/home/a495488027/.local/lib/python3.8/site-packages python3 mycode.py

Temporarily add the python module search path to sudo and run the code. This is when you doesn't want to install the package system-wide.

---

Back to your problem,

sudo PYTHONPATH=/home/a495488027/.local/lib/python3.8/site-packages bash script.sh

should do the work.

Answer 2

Quick solution: install the same that you have installed with sudo and then it will be accesible for all users