for i in range(0, len(list_dirs)):
new_path = string.join(list_dirs[0:i+1], os.sep)
if (new_path <> '') and (not os.path.exists(new_path)):
for i in range(0, len(list_dirs)):
new_path = string.join(list_dirs[0:i+1], os.sep)
if (new_path <> '') and (not os.path.exists(new_path)):