How to know Python built-in in function??

Answer 1

In any case:
help(x)
x is a function you want to ask about. For example: help(print) displays all information about the print() function.

Answer 2

Built in functions. Just click on the function you want to learn more about.
https://docs.python.org/3/library/functions.html
Info on string:
https://docs.python.org/3.6/library/string.html

Answer 3

A little more detail on your question please?

Answer 4

how to know all functions like max,min,upper how to know

Answer 5

thanks♥