#!/usr/bin/env python
"""
lengths.py - Tabulate and Report on Line Lengths
Author: Sean B. Palmer, inamidst.com
"""

import sys

def avg(tally): 
   return min(tally), round(float(sum(tally)) / len(tally), 3), max(tally)

def lengths(names, out=sys.stdout): 
   all = []
   for fn in names: 
      tally = []
      f = open(fn)
      for line in f: 
         line = line.rstrip('\r\n')
         tally.append(len(line))
      f.close()
      all += tally
      print >> out, '%s: %s - %s - %s' % ((fn,) + avg(tally))
   print >> out, 'All: %s - %s - %s' % avg(all)

def main(): 
   lengths(sys.argv[1:])

if __name__ == '__main__': 
   main()