I’d like to create a unit test that resets the sys.path variable to its original value.

Constraint: I cannot store a backup of sys.path in the location it’s being set.

Background

In a project there’s a need to fiddle with sys.path in order for imports to work from test code (because python does not support treating an import as a package without it being properly packaged and installed).

Project looks like this:

/
   - domain_code
   - tests
       - __init__.py
           sys.path.append(domain_code)
       - test_xxx.py
       - test_yyy.py
       - test_zzz.py

in test_zzz.py, I’d like to reset the sys.path to it’s original value.