udacity_unzip.py

import os, zipfile

dir_name = 'D:\\Work\\Udacity\\Computer Vision Nanodegree v4.0.0'
extension = ".zip"

os.chdir(dir_name) # change directory from working dir to dir with files
print(os.getcwd())

for path, dir_list, file_list in os.walk(dir_name):
    for file_name in file_list:
        if file_name.endswith(".zip"):
            # print(file_name)
            abs_file_path = os.path.join(path, file_name)

            # The following three lines of code are only useful if 
            # a. the zip file is to unzipped in it's parent folder and 
            # b. inside the folder of the same name as the file

            parent_path = os.path.split(abs_file_path)[0]
            output_folder_name = os.path.splitext(abs_file_path)[0]
            output_path = os.path.join(parent_path, output_folder_name)

            zip_obj = zipfile.ZipFile(abs_file_path, 'r')
            zip_obj.extractall(output_path)
            zip_obj.close()

            print('Extracted all zip files successfully!')