🔒 what does and keyword do not in a bool

[white glen]

@dire basin

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[dire basin]

!e print(None and 5)
print(6 and 5)

[white glen]

@dire basin :white_check_mark: Your 3.12 eval job has completed with return code 0.

001 | None
002 | 5

[twilit tinsel]

x and y is effectively y if x else x

[dire basin]

or makes more sense to me

[twilit tinsel]

for and:

• if x is False, regardless of the value of y, the result will be False, so it returns x
• if you know that x is True, then the result will be equal to y whenever it is true or false, so it returns y

[green acorn]

wait what even is the original question

[twilit tinsel]

I assume they meant "What does the and and or keywords do when you are not working with booleans"

[dire basin]

!e print(False and 6)

[white glen]

@dire basin :white_check_mark: Your 3.12 eval job has completed with return code 0.

False

[copper copper]

Both and and or return first element that definitely shows the logical value.

So in case of or it means first "truthy" value or last value
And in case of and it's first "falsy" value or last value

Because or "becomes" True with only one thing being True/truthy. While and needs all truthy to be True - so any False/falsy before that defines the whole thing will "be" false

[dire basin]

i know useful examples with “or”like optional parameters but can you give me an example with “and”

[copper copper]

I don't think it's used much in practice, it just exists here for compatibility reasons - we have or, so we also have and

[twilit tinsel]

!e sometimes you might see it being used for things like py for value in ('hello', None, 'world'): print(value and value.upper()) for value in ('hello', None, 'world'): print(value or "missing") but I'd recommend just using explicit if statements instead

[white glen]

@twilit tinsel :white_check_mark: Your 3.12 eval job has completed with return code 0.

001 | HELLO
002 | None
003 | WORLD
004 | hello
005 | missing
006 | world

[dire basin]

thanks

!close

[white glen]

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