import string # If you don't then write down the whole list of strings a-zA-Z
count = 0
try:
    # Counting user input is too much easy
    fname = open(raw_input("Enter File name : ")).read()
    # Warning, len(fname) cannot be used.
    # Because it also counts all those spaces.
except IOError:
    print"File not found!"
else:
    for i in fname:
        if i in string.ascii_letters: # if i in a-zA-Z
            count +=1
    print"Word Count is : %s" % count