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pythonraspberry-pi

Raspberry Pi Python run program from path

I am currently trying to get a Python program to autostart on my Raspberry Pi. The problem is, that the program is reading in a config file, which is located in the same folder as the program itself. So when I run the Program from IDE, it works fine.

If I try to run it from the console (or rc.local) it doesn't find the config file. If I cd into the folder and try to run it, it works fine again.

So how can I tell Python or rc.local to run from inside the folder? I have tried to goolge for a solution, but couldn't find one.

I don't want to adress the config file with it's complete path, because I program and debug on my PC, but use the program on the raspberry, so I would have to change the path every time I switch between devices.

Hopefully someone can help me, thanks in advance.

Solution

  • I see several possible approaches here:

    • On the raspberry pi, you can cd to the correct directory before running the python program: cd <destination dir> && python your_program.py, or write a two-line shell script to to this.
    • Pass an optional command line argument to python that contains the absolute path to the config file. If no argument is given, use the current path.
    • Try to auto-detect the environment that the python program is running in (e.g. using gethostname() or by setting an environment variable as shown here).