Coursera Python For Everybody Chapter 10 Tuples Exercise

 filename=input("Enter the file name: ") #getting the file name  

if len(filename) < 1 : filename="mbox-short.txt"

fh=open(filename) #opening the file 

rline={} #making a dictionary

for line in fh:

    if line.startswith("From "): #getting the hours from the word 'From'

        hours=line.split()[5] #getting only time starting from position 1 

        time=hours.split(":")[0] #getting only hours starting from position 1 

        rline[time]=rline.get(time,0) + 1  #logic for dictionary counting

            

lst=list(rline.items()) #converting the dictionary into list

lst.sort() #sorting the list

for a in lst:

    print(a[0], a[1]) #looping to get the vertical number arrangements