Python - Reading and print string x times

I have an assignment where I have a text file with a word on each line which forms a string. On some lines there are a number with which amount of times I have to print the string, separated by a comma and space and finish with a period

For instance:

Darth
Maul
is
a
bad
person
3

Which should then be: Darth Maul is a bad person, Darth Maul is a bad person, Darth Maul is a bad person.

So far I'm quite stuck, I'm familliar with how to read the file line by line and I guess I have put the words in a list and determine when the number comes to iterate that list a number of times.

So far I have:

TEXT = input 'sith.txt'
words = []

with open(TEXT, 'r') as f:
    line = f.readline()
    for word in line:
        if string in word //is a string not an int
            words.append(string)
        else //print words + ', '

After this I'm pretty much stuck. Anyone out there that could point me in the right direction? Regards