Pipe bruteforcer script to extract the flag @ rev100-re2 @ alexctf2k17

int_pipebruteforcer_alexctf.py

#!/usr/bin/python
## Pipe bruteforcer to extract the flag - rev100-re2 @ alexctf2k17
# @author intrd - http://dann.com.br/
# @license Creative Commons Attribution-ShareAlike 4.0 International License - http://creativecommons.org/licenses/by-sa/4.0/

import sys, time
from subprocess import Popen, PIPE, STDOUT

fixed=""
i=0
while 1:
	with open("1_alphanumsimbs.txt") as fileobject:
		for line in fileobject:
			#print line
			passtry = line.strip()
			print str(i)+": "+fixed+passtry
			process = Popen(["./re2", fixed+passtry], stdout=PIPE, stdin=PIPE, stderr=PIPE)
			(output, err) = process.communicate(input=""+fixed+passtry) 
			#print output
			if not "Better luck" in output:
				print str(i)+" correct: "+passtry
				print output
				fixed+=passtry
				#print fixed
				time.sleep(0.1)
			exit_code = process.wait()
			i+=1