import os

# 打开文件
path = "D:/software_workspace/jupyter_workspace/data"
dirs = os.listdir(path)
#print(dirs)

# 输出所有文件和文件夹
for file in dirs:
    if os.path.splitext(file)[1] == '.mat':
        new=file[0:8]+'.mat'#截取文件名前8个字符
        os.chdir(path)
        os.rename(file,new)#进行重命名