subprocess.Popen return stderr instead of stdout

Question

I am trying to send git push command with subprocess.Popen . Command is successful but the git command output is returned by subprocess under stderr instead off stdout

def execute_cmds(commands):

    for cmd in commands:
        send_commands = subprocess.Popen(
            cmd,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            universal_newlines=True,
            shell=True
            )
    send_commands.wait()
    output, errors = send_commands.communicate()

    print('OUTPUT: {}'.format(output))
    print('ERRORS: {}'.format(errors))

OUTPUT:
ERRORS: warning: redirecting to https://gitlab.com/networkAutomation/git_test_module.git/
To https://gitlab.com/networkAutomation/git_test_module
   afb2400..fbcb4db  HEAD -> master

Answer 1

这对 Git 来说很正常：Git 将其输出打印到其标准错误流中。

Answer 2

You can set the stderr to the standard output:

stderr=subprocess.STDOUT

so you can get the value returned in stdout