Unable to access packages inside virtual environment on startup-CodePudding

I am working on creating a bash file on my raspberry pi in order to be able to launch a webapp project that I have made when the raspberry pi starts up. I have been able to figure out most of it, except for I have issues with the virtual environment letting me access my packages that were installed in the virtual environment. When I run

workon tm
python main.py

in the terminal I am able to get my project working fine. But when I run my bash file

#!/bin/bash
# startup.sh
#Open Chromium on the Raspberry Pi on fullscreen on bootup. Then open the virtual environemnt, and then run our python script

#su - pi -c "/usr/bin/chromium-browser --start-fullscreen 127.0.0.1:5000"
cd /
cd /home/pi/MySQLAppTrueTrue 
source /usr/local/bin/virtualenvwrapper.sh
source ~/.bashrc
#workon /home/pi/.virtualenvs/tm
workon tm
sudo python /home/pi/MySQLAppTrueTrue/main.py

I get the error

pi@raspberrypi:~/MySQLAppTrueTrue $ ./startup.sh
Traceback (most recent call last):
  File "/home/pi/MySQLAppTrueTrue/main.py", line 1, in <module>
    from webapp import app #import the web app
  File "/home/pi/MySQLAppTrueTrue/webapp/__init__.py", line 2, in <module>
    from flask_mysqldb import MySQL #import mySQL
ImportError: No module named flask_mysqldb

Does this mean that my workon tm line isnt actually causing the device to be working on the virtual environment. If so how do I get that to work? Or do I just need to install my packages globally instead of in the virtual environment?

CodePudding user response：

Instead of all that virtualenvwrapper workon magic, you should probably just use that virtualenv's Python interpreter:

#!/bin/bash
cd /home/pi/MySQLAppTrueTrue 
sudo /home/pi/.virtualenvs/tm/bin/python /home/pi/MySQLAppTrueTrue/main.py