countlines

#!/usr/bin/python2.7

import sys

for filename in sys.argv[1:]:
    try:
        with open(filename, "r") as file:
            cnt = 0
            for line in file:
                cnt += 1
            print "file %s has %d lines" % (filename, cnt)
    except IOError:
        print "couldn't open file %s (IOError)" % filename
    except:
        print "unknown error on file %s" % filename

# ALTERNATIVE THINGS :
print "ALTERNATIVE THINGS"

for filename in sys.argv[1:]:
    try:
        file = open(filename, "r")
    except IOError:
        print "couldn't open file {0} (IOError)".format(filename)
    except Exception as error:
        print "unknown error on file {0} ({1})".format(filename, type(error))
    else:
        print "file {name} has {cnt} lines".format(name=filename, cnt=len(file.readlines()))
        file.close()