import re

from collections import Counter

#define a function to print the result by line

def printByLine(tuples):

   return( 'n'.join(' '.join(map(str,t)) for t in tuples))

#define a function to print the result alphabetically

def countsSortedAlphabetically(counter, **kw):

   return sorted(counter.items(), key = lambda counter:counter[0], **kw)

#open the file

myfile = open("test.txt")

#convert to lower case

myfile = myfile.read().lower()

#match words and save them in a list

words = re.findall(r"w+", myfile)

#calculate the counter of words and save the result in a list

counter = Counter(words).most_common(10)

myfile.close()

print counter

print

print printByLine(counter)

print

print printByLine(countsSortedAlphabetically(dict(counter)))

f = open("test_result.txt",'wb')

#The argument a of this function must be string or buffer

#I can't write printByLine results into test_result.txt for the moment

f.write(str(counter))

f.close()