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I know that I can add an import path to Python like this:

import sys

sys.path.append("/path/to/directory/")

But, when I restart Python, this is gone. I'd find it quite annoying if I had to do this all the time, I'd like to do this once and for all and be done with it.

So, how? Where can I find that file? Or do I need to edit something else? I'm using the latest version of Ubuntu.

Answers

From man python

   ~/.pythonrc.py
          User-specific initialization file loaded by the user module; not used by default or by most applications.

ENVIRONMENT VARIABLES

   PYTHONPATH
          Augments the default search path for module files.  The format is the same as the shell's $PATH: one or more directory  pathnames
          separated by colons.  Non-existent directories are silently ignored.  The default search path is installation dependent, but gen-
          erally begins with ${prefix}/lib/python<version> (see PYTHONHOME above).  The default search path is always appended to  $PYTHON-
          PATH.   If  a script argument is given, the directory containing the script is inserted in the path in front of $PYTHONPATH.  The
          search path can be manipulated from within a Python program as the variable sys.path .