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This one here is a list and now it is a tuple.

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So a tuple is just like a

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list, but with parentheses, not square brackets.

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If you print it out, of course you'd

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get the same representation as in here.

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So 1, 4, 5, 1, 4, 5.

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However, the brackets, the parentheses is not

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the only difference between lists and tuples.

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In fact, this is just a difference in syntax.

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The real difference there is that tuples such

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as this one in here are immutable and

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lists such as this one

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are mutable.

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What that means is that the list monday_temperatures2,

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you can add more items to

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the list using for example the append method.

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So if you check monday_temperatures

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now you get a list mutated.

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This mutability makes list very dynamic.

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You'll see later how when we do these

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batch operations and in each operation we are

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adding items to the list as we generate

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those items, those values with some functions.

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But this is not the case with tuples.

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If you try to append in a tuple,

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you'll get an error because the tuple doesn't

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actually have an append method at all.

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Likewise, it doesn't have a remove method,

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like the list does.

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So four is not there anymore.

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Tuples, however, have the advantage that they

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are a bit faster than lists.

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But you should think what to use.

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So whether to use lists or tuples, you should think

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if the array you are creating is going to be

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changed during the course of the program or not.

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So for now, I'm not going deeper into tuples and

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lists, but when we create these ten applications during the

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course, you will understand the main differences between the two

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by seeing how they work in real programs.

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[Outro sound]