Write a function stats() that accepts a filename and reports files longest line.

Q. Write a function stats() that accepts a filename and reports the file's longest line.

Answer :-

def stats (filename) :
    longest = ""
    for line in file(filename) :
        if len(line) > len(longest) :
            longest = line
    print("Longest line's length = ", len(longest))
    print (longest)