实时读取stdout进程

Let's consider this snippet:

让我们考虑一下这个片段：

from subprocess import Popen, PIPE, CalledProcessError


def execute(cmd):
    with Popen(cmd, shell=True, stdout=PIPE, bufsize=1, universal_newlines=True) as p:
        for line in p.stdout:
            print(line, end='')

    if p.returncode != 0:
        raise CalledProcessError(p.returncode, p.args)

base_cmd = [
    "cmd", "/c", "d:\virtual_envs\py362_32\Scripts\activate",
    "&&"
]
cmd1 = " ".join(base_cmd + ['python -c "import sys; print(sys.version)"'])
cmd2 = " ".join(base_cmd + ["python -m http.server"])
f