popen3 loops

popen3

import os

#define x and y here i guess

for i in xrange(x,y):
	(out, err) = os.popen3('cmd -s %s --switch2 %s' %(i, blah))[1:] 
	#Note: [1:] excludes [0], stdin, because I don't care for it.

	#printing out to outfile and err to .errfile goes here
	#code excluded because its not the main focus here
	
	#authors note to self:
	#add i to err before printing
	#to track which iteration caused errors

#note: can also be used before printing to .errfile to clean logs of known "ehh no big deal" errors
#search err for Keyword(s)
if 'Keyword' in err:
  print  str(i) +' Keyword'  #alerts to errors without digging through the log
else: print i #keeps track of progress