Capturing inputs values from internal python script

[limors11]

Hi,

First thanks for your feedback.
I don't import other scripts or use the classes, those are black box separated scripts.
Till now I used methods like subprocess.getoutput(cmd) or check_output(..)
as the following:

try:
		data = subprocess.check_output(cmd, shell=True, stderr=subprocess.STDOUT) 
		exitCode = 0
except subprocess.CalledProcessError as ex:
		data = ex.output
		data2 = ex.cmd
		exitCode = ex.returncode
		writeToAll(logfile, "Command:\n " + str(cmd) + "\nResult:\n Error occurred: " + str(data) + " exit code: " + str(exitCode) + "(0 for SUCCESS). Build will exit.", loggingLevel )
		writeInfoToLog( logfile, "---------------------------------------------------------------------------------------------")
		if exitOnError:
			exit(exitCode)
	if data[-1:] == '\n':
		data = data[:-1]
	return data, exitCode

But this won't serve me now in others (I am just a python beginner, not an expert). I will add an example to explain my problem.

#child.py
#!/usr/bin/env python

import sys
# 
print('Enter user:')
user = input()
print('Enter password:' )
passwd = input()
print('Enter tag:')
tag = input()

#Parent.py
...
p = subprocess.Popen([PYTHON, "-i", "./child.py"], stdout=subprocess.PIPE, stdin=subprocess.PIPE, shell=True)
(output, err) = p.communicate()
...

Don't know how to continue from here to pass the input parameters user inserted in child.py.

Hope this explains it.
Please advice,
Thank you for your help,
Limor