Intentionally terrible script made for an interview. The subject is asked to fix the script up, and add the functionality for the user to specify a specific file extension to copy.

terrible.py

import os
for index_variable in range(len(os.listdir('.'))):
    if os.listdir('.')[index_variable][os.listdir('.')[index_variable].find('.'):] == '.txt':
        print "found text file"
        import shutil
        import sys
        shutil.copyfile('./' + os.listdir('.')[index_variable], sys.argv[1] + '/' + os.listdir('.')[index_variable])
        for i in range(len(sys.argv) - 2):
            if sys.argv[i + 2] == '--and':
                shutil.copyfile('.' + os.listdir('.')[index_variable], sys.argv[i + 3])