有趣的问题。
一种有效的方法是运行命令外壳，然后通过管道将命令传递给它stdin（示例使用Python 3，对于Python 2，您可以跳过decode()调用）。请注意，命令外壳程序调用被设置为抑制除写入stdout的显式输出外的所有内容。
>>> import subprocess
>>> cmdline = ["cmd", "/q", "/k", "echo off"]
>>> cmd = subprocess.Popen(cmdline, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
>>> batch = b"""\
... set TEST_VAR=Hello World
... set TEST_VAR
... echo %TEST_VAR%
... exit
... """
>>> cmd.stdin.write(batch)
59
>>> cmd.stdin.flush() # Must include this to ensure data is passed to child process
>>> result = cmd.stdout.read()
>>> print(result.decode())
TEST_VAR=Hello World
Hello World
将其与分别调用的结果进行比较subprocess.call：
>>> subprocess.call(["set", "TEST_VAR=Hello World"], shell=True)
0
>>> subprocess.call(["set", "TEST_VAR"], shell=True)
Environment variable TEST_VAR not defined
1
>>> subprocess.call(["echo", "%TEST_VAR%"], shell=True)
%TEST_VAR%
0
602392714
清零编程群