My function cannot capitalize the first letter correctly, but I do have "upper" in my code

I want to write a program that takes a sentence as input and then I want to capitalize the first letter of each word in the sentence. Here’s what I have:

input_sentence = input("Enter a sentence: ")
words = input_sentence.split()
for word in words:
    edited_word = word[0].upper() + word[1:]
print("Edited sentence:", ' '.join(words))

When I run this code, it doesn’t seem to change the sentence at all. But I do have upper(). What’s the problem?

I tried to enter a sentence, but the sentence didn’t been capitalized:

Enter a sentence: i am writing a sentence
Edited sentence: i am writing a sentence

The required output is like:

Enter a sentence: i am writing a sentence
Edited sentence: I Am Writing A Sentence

>Solution :

It seems like you are trying to imitate some sort of textbook code. The problem is that in your loop, you are doing work on edited_word, but use join(words) afterward. You should either rewrite the words or create a new array. Like, don’t expect things to change automatically.

Try this:

words = input("Enter a sentence: ").split()
edited_words = []
for word in words:
    word = word[0].upper() + word[1:]
    edited_words.append(word)
print("Edited sentence:", ' '.join(edited_words))