ch9_assign.py

# 9.4 Write a program to read through the mbox-short.txt and figure out who has the 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.


fh = open("mbox-short.txt")

counts=dict()

for line in fh:
	words=line.split()
	if len(words) == 0 : continue
	if words[0]=="From":
		if words[1] not in counts:
			counts[words[1]]=1
		else:
			counts[words[1]] += 1

v=list(counts.values())
k=list(counts.keys())
maxkey = k[v.index(max(v))]	


print(maxkey, counts[maxkey])