counting_in_file_with_dict.py

#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 appear in the file. 
#After the dictionary is produced, the program reads through 
#the dictionary using a maximum loop to find the most prolific committer.


name = input("Enter file:")
if len(name) < 1:
    name = "mbox-short.txt"
handle=open(name)


counts = {}

for line in handle:
    words=line.split()
    try:
        if words[0]=="From":
            counts[words[1]] = counts.get(words[1],0)+1
    except:
        continue
       
#print(counts)

bigcount= None
sender = None

for key in counts:
    if bigcount is None or counts[key]>bigcount:
        bigcount = counts[key]
        sender = key

print(sender, bigcount)