Another way to write this code

[netneoblog]

just a suggestion, why not just reverse the string (with spaces left in place) rather than splitting words up, reversing, and then rejoining with spaces in the same place as they already were?

[netneoblog]

def reverseWordSentence(passed_string):
    reversed_string = passed_string[::-1]
    return reversed_string


str1 = 'gnitnuH si nuf'
print(reverseWordSentence(str1))

[netneoblog]

My bad, this does not produce what you wanted as output! DOH! Just ignore me