9.4 Write a program to read through the mbox-short.txt and figure out who has sent the greatest number of mail messages. The program looks for 'From ' lines and takes the second word of those lines as the person who sent the mail. The program creates a Python dictionary that maps the sender's mail address to a count of the number of times they a…

9.4.py

name = input("Enter file:")
if len(name) < 1:
    name = "mbox-short.txt"
handle = open(name)
kv_book=dict()
list1=[]
for line in handle:
    if line.startswith('From '):
        split=line.split()
        list1.append(split[1])
        
for names in list1:
    kv_book[names]=kv_book.get(names,0)+1
biggest_count=None
biggest_word=None
for k,v in kv_book.items():
    if biggest_count is None or v>biggest_count:
        biggest_word=k
        biggest_count=v
print(f"{biggest_word} {biggest_count}")