import random
import string
def getCode(length = 10, char = string.ascii_uppercase):
 return ''.join(random.choice( char) for x in range(length))

print "6 Random capitals: ", getCode(6)
print "5 Random Other chars:  ", getCode(5, "otherchars") 
print "7 Random Lower chars", getCode(7, string.ascii_lowercase) 

6 Random capitals:  HRFLIQ
5 Random Other chars:   crhrh
7 Random Lower chars rwcnyua