从Expect执行Python脚本

Question

I am using Expect for automation, and I want to execute a Python script from it. But it is not working... This is what I have tried so far:

#!/usr/bin/expect
spawn  "./os_fun"

and

#!/usr/bin/expect
spawn  "./os_fun.py"

and

#!/usr/bin/expect
spawn  python "./os_fun(.py)"

The "os_fun.py" contains the simple code:

#!/bin/usr/python
import os
print os.getcwd()

I would also like to mention that I must use Expect only and not Bash as I need to do the automation part, and I am not supposed to use Pexpect.

Answer 1

When it comes to Expect , you always have to expect something, so that Expect will wait for it. Else, it will proceed as such. Simply spawning a processing does not make sense, as Expect don't wait to see for it which in turn makes the user not to see the output as well.

In your case, you just have to run the code and see the output till the program completes. I hope my understanding is correct.

!/usr/bin/expect
spawn python os_fun.py
expect eof; # will wait till 'eof' seen

Here, expect command will wait till it sees close of the running program. Default timeout is 10 seconds which can be changed as

set timeout 60; # Timeout value as 1 min