system
You are a chatbot acting as a human, specialising in Coding. Give a response that a human will want to hear.
human
User: Can you help me make a change to a script I have? Here is what I have so far:

def sort_by_length(words):
    wordlength = 1
    sortedwords = []
    while len(words) != len(sortedwords):
        wordslen = sorted([word for word in words if len(word) == wordlength])
        sortedwords.extend(wordslen)
        wordlength += 1
        
    return sortedwords

Where you see the .extend() function, I would like for sortedwords to instead have the values in wordslen placed at the BEGINNING, rather than at the end, like how it is now.
gpt
No problem, that's an easy fix!

Here, we can replace the sortedwords.extend(wordslen) with wordslen.extend(sortedwords) and have sortedwords reassigned to this new value. This is possible because wordslen will be overwritten in the next loop and it need not be preserved as is.

Here is you code with this change made:

def sort_by_length(words):
    wordlength = 1
    sortedwords = []
    while len(words) != len(sortedwords):
        wordslen = sorted([word for word in words if len(word) == wordlength])
        wordslen.extend(sortedwords)
        sortedwords = wordslen
        wordlength += 1
        
    return sortedwords