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9 points

TIL. Obviously I’ve avoided using it much.

So how does that work? Is there a few implicit conversions that are allowed, but if you really write something weird it will complain?

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11 points

Yes, it has no implicit conversions like JS or R. It does, however, allow you to not specify the type of a variable and even change it without complaining. Even if you add types these are only hints that won’t generate errors unless you use external type checking (e.g. mypy).

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example:

i = 5.0//2

list[i]

throws an error because i is double and the list-index expects an integer.

so for it to work the code needs to look like this:

i = int(5.0//2)

list[i]

meanwhile this works:

i=5

i= ‘abcde’

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2 points

Isn’t // integer division?

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1 point

you can do i: int to make this error out

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6 points

In python you always have the right type, cause everything is an object

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