CODEWITHSUNDEEP
pythonstdoutstdinpopen
Flo
Flo

Reputation: 3047

Python popen() insert password when asked for

I develop a python gui for a c program. The Program asks for two passwords. How can I wait for the password promt and then insert the password in code?

At the moment I try to do this via:

subprocess.popen.communicate(input)

But that doesn't work as the program asks for the password in the shell again.

Just for your understanding here is the flow of the program:

Upvotes: 2

Views: 3310

Answers (1)

iFlo
iFlo

Reputation: 1484

You should considerate using another library : Pexpect

Pexpect is a pure Python module for spawning child applications; controlling them; and responding to expected patterns in their output. Pexpect works like Don Libes’ Expect. Pexpect allows your script to spawn a child application and control it as if a human were typing commands.

Here is a sample of code to give a username and password when connecting to FTP server : 

import pexpect
child = pexpect.spawn('ftp ftp.openbsd.org')
child.expect('Name .*: ')
child.sendline('bob')
child.expect('Password:')
child.sendline('thisisnotasecurepassword')

Upvotes: 2

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