'''
   commandline.py
   Jeff Ondich, 2013-01-04

   Identical to linereader.py, but takes the input file path from
   the command line rather than from a hard-coded string.
   
   Intended as the Python half of parallel examples in Python and
   Java. See CommandLine.java.
'''

# START CHANGES
# This is the part that's different from linereader.py.
import sys

if len(sys.argv) != 2:
    print >>sys.stderr, 'Usage: python %s inputFilePath' % sys.argv[0]
    exit()

inputFilePath = sys.argv[1]
#END CHANGES

try:
    inputFile = open(inputFilePath)
except Exception, e:
    print >>sys.stderr, 'Cannot open', inputFilePath
    exit()

numberOfLines = 0
for line in inputFile:
    print line.upper(),
    numberOfLines += 1
print '\nNumber of lines:', numberOfLines