Is this correct way to import python scripts residing in arbitrary folders?

Question

This snippet is from an earlier answer here on SO. It is about a year old (and the answer was not accepted). I am new to Python and I am finding the system path a real pain.

Answer 1

As mentioned, please consider thread safety, if appropriate. I prefer something closer to a solution posted in a similar post. The main differences below: the use of insert to specify priority of the import, correct restoration of sys.path using try...finally, and setting the global namespace.

# inspired by Alex Martelli's solution to
# http://stackoverflow.com/questions/1096216/override-namespace-in-python/1096247#1096247
def import_from_absolute_path(fullpath, global_name=None):
    """Dynamic script import using full path."""
    import os
    import sys

    script_dir, filename = os.path.split(fullpath)
    script, ext = os.path.splitext(filename)

    sys.path.insert(0, script_dir)
    try:
        module = __import__(script)
        if global_name is None:
            global_name = script
        globals()[global_name] = module
        sys.modules[global_name] = module
    finally:
        del sys.path[0]