python进行cmd命令行的执行,最典型的模块是使用subprocess。

cmd python命令 python cmd命令行在哪_cmd命令怎么找不到python

一,执行cmd并读取返回值import subprocess

p = subprocess.Popen("ls",
stdout=subprocess.PIPE, universal_newlines=True)
p.wait()
result_lines = p.stdout.readlines()
for line in result_lines:
print(line)

二,执行cmd命令import subprocess

cmd = "ffmpeg -i bb_short.mp4 -vf \"select=\'eq(pict_type, PICT_TYPE_I)\'\" -vsync vfr out%d.png"
p = subprocess.Popen(cmd, shell=True)
p.wait()