python - 期望在函数中产生

Question

当我把它放在一个函数中时，pexpect.spawn 似乎失败了。在下面的示例中，我希望它同时触及“/tmp/no.txt”和“/tmp/yes.txt”。它只涉及/tmp/yes.txt。我已经尝试了“导入预期”的所有明显位置。它不会抛出错误，只是不会运行。感谢您的任何建议!

import pexpect
def fun():
    import pexpect
    fail = pexpect.spawn('touch /tmp/no.txt')

fun()
succeed = pexpect.spawn('touch /tmp/yes.txt')

$ ls /tmp/*.txt
/tmp/yes.txt
$ 

Answer 1

您需要等待命令运行:

import pexpect
def fun():
    #import pexpect you've already imported pexpect you don't need to import it again 
    fail = pexpect.spawn('touch /tmp/no.txt')
    fail.wait()

fun()
succeed = pexpect.spawn('touch /tmp/yes.txt')
succeed.wait()