'SPDT Switches with a Raspberry Pi Pico

Basically I'm just trying to figure out how an spdt switch would work with a raspberry pi pico. When I search for information on how to interface a switch with a pico, all I get is info on button switches.

Does the spdt switch act like a closed circuit, constantly providing power to the pin I connect it to?

Assuming the answer to the question above is "yes", how would I go about telling micropython to do different things based on which pin is receiving power?

Sorry for the simple questions, I have no experience in the domain of microcontrollers and can't find this info anywhere.



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