Question

Write a Python program that reads a file, input by the user, containing one word/token per line with an empty line between sentences. The program prints out the longest word found in the file along with its length.

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#code

#main method
def main():
    #reading name of file from user, make sure that file exists on the
    #same directory
    filename=input('Enter filename: ')
    #opening file to read
    file=open(filename)
    #initializing a variable to store the longest word to None
    longest_word=None
    #looping through each line (word)
    for line in file:
        #removing trailing newline character from line
        line=line.strip()
        #checking if line is not blank
        if len(line)>0:
            #if longest_word is not initialized or current word has more
            #length than longest_word, updating longest_word
            if longest_word is None or len(line)>len(longest_word):
                longest_word=line
    #closing file
    file.close()
    #printing longest_word if it is not None
    if longest_word is not None:
        print('The longest word is',longest_word)
        #also printing the length
        print('Length of longest word is',len(longest_word))

#invoking main()
main()

#output (here months.txt contain names of all months in separate lines)

Enter filename: months.txt

The longest word is September

Length of longest word is 9