reverse a word

Question

I thought I had the coding right, but when I run, nothing appears. Please help. I need to reverse the lettering of a word that has more than 7 letters:

def rev_words(sentence):
sentence = ["Gravity is ridiculous"]
for word in sentence.split(' '):
if len(word) >= 7:
sentence.append(word[::-1])
else:
sentence.append(word)
return ' '.join(sentence)
print(rev_words())

Answer 1

def rev_words(sentence):
rev_word = []
for word in sentence.split():
if len(word) > 7:
rev_word.append(word[::-1])
else:
rev_word.append(word)
return " ".join(rev_word)

print(rev_words("Gravity is ridiculous"))

Answer 2

split() works on strings not lists.
so you did not have your coding right.
you could have done this, with the same code:

def rev_words():
sentence = ["Gravity is ridiculous"]
for word in sentence[0].split(' '):
if len(word) >= 7:
sentence.append(word[::-1])
else:
sentence.append(word)
return ' '.join(sentence)

print(rev_words())