如果mmm.py在/Users/mac/Desktop/video/python路径下,而执行文件路径为/Users/mac/Desktop/video/python/day16,如果普通导入一定会报错,我们可以把/Users/mac/Desktop/video/python添加到环境变量sys.path中,防止报错。 # run.py import sys # 导入环境变量模块 sys.path.append(r'/Users/mac/Desktop/video/pytho...