How to handle browser popup dialog

Could you please help me about how to handle the browser pop up. For example, browse button for file selector. JS error pop up.
As I know, in common selenium in python. we handle it in this way. drv.find_element_by_id("IdOfInputTypeFile").send_keys(os.getcwd()+"/image.png")

Did you expose a similar API for ending user? I'm really appreciate if you can help me figure out.

Thanks,
Eric