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Python Introducing Lists Meet Lists All You Need Is Lists

Not sure how to add "beatles" to "others" correctly

Ive watched the video a few times, and I am not understanding why beatles.extend(["beatles", "others"]) isn't the right way to do this. any help is appreciated.

beatles.py
beatles = ["John"]
others = ["George", "Ringo"]
beatles.append("Paul")
beatles.extend (["beatles", "others"])

2 Answers

Steven Parker
Steven Parker
229,967 Points

Anything in quotes is a literal string and only represents the characters between the quotes. Quotes should never be put around a variable or parameter name.

Also, when you extend beatles, you wouldn't want beatles as part of the argument. And since others is already a list, it won't need to be enclosed in brackets.

Ok, I'm following what you're saying about quote strings, but I'm still not understanding how to format the .extend to work properly in this case. I've tried several iterations trying to get it to work, but I think I'm missing something fundamental here.

Steven Parker
Steven Parker
229,967 Points

When using "extend" to add one list onto another, the syntax looks like this:

    another.extend(onelist)

That explained it. Thanks Steven Parker