Calculates mails for specific day

Calculate which day you received how many mails:-

 link for text file.

Source Code:-

#prompt to input a file

file  = raw_input("Enter a file name: ")

try:
    #try to open a file

    f_obj = open(file, 'r')

    #print 'yes'
except:
    #if file doesn't open error

    print 'can\'t open', file
    quit()

#define a dictionry named OUTPUT

output = dict()
#loop through the file for line one at time

for line in f_obj:
    line = line.lower()
    line = line.rstrip() #remove the white sapce from line's right end
    if line.startswith('from '):
        #print line

        words = line.split()
        #print words

        key = words[2]
        if key in output:
            output[key] += 1
        else:
            output[key] = 1

print output