Question

Python

Write a program that takes a text filename as command line argument, and prints number of times each letter occurred in this file.

Answer 1

Code:
import collections
import string
import sys

#function to count no of times a letter appeared
def count(textFile):
#opens text file as f  
with open(textFile, 'r') as f:
   #read content of the file
content = f.read()
#all letters of alphabet   
letter = string.ascii_letters
#count no of times all letter in text file appears with function collections.Counter()
counts = collections.Counter(i for i in content if i in letter)
#return output
return counts

#calling function count with text file name taken from command line
#sys.argv[1] is used to take command line arguement
print(count(sys.argv[1]))

Code Photo:

Text File:
Output: