import tarfile, os def extract_tar(file_path, dest_dir = "."): print('Extracting "{:s}" to "{:s}"'.format(file_path, dest_dir)) with tarfile.open(file_path) as tar: tar.extractall(dest_dir) tar.close() def which(program, additional_paths = None): def is_exe(fpath): return os.path.isfile(fpath) and os.access(fpath, os.X_OK) fpath, fname = os.path.split(program) if fpath: if is_exe(program): return program else: paths = os.environ["PATH"].split(os.pathsep); if additional_paths != None: paths.append(additional_paths) for path in paths: path = path.strip('"') exe_file = os.path.join(path, program) if is_exe(exe_file): return exe_file return None