name = input("Enter file:") if len(name) < 1 : name = "mbox-short.txt" handle = open(name) dictionary = dict() #creating a dictionary lst = [] #creating a list for line in handle: #for every line in the file words = line.split() #split every word in each line if len(words) > 2 and words[0] == 'From': #if the words list has more than two words and the

first word is from

    hr = words[5].split(':') #save hours in hr and split the hour using the : symbol
    dictionary[hr[0]] = dictionary.get(hr[0], 0) + 1 #if that particular hr is present in dictionary 
    #then add 1 to the current count, else add taht hour to dictionary and make count 1
else:
    continue

for k,v in dictionary.items(): #for every item in the dictionary go through in for loop lst.append((k,v)) #add items in dictionary to the list with its key

hence every element of dictionary is appended as a list within lst.

lst.sort() #sort the list wrt k,key for k,v in lst: #for loop to print the list of keys and values in separate lines print(k,v)

ed-lau / python-for-everybody

Help to understand #10

first word is from

hence every element of dictionary is appended as a list within lst.