Python : Using global variables in a function

How can I create or use a global variable in a function?

You can use a global variable within other functions by declaring it as global within each function that assigns a value to it.

[autismuskaefer]

Thank you very much. the "global"-feature was exactly that what I was searching for.

[demoncookie]

Thank you. This explained it better than the book I am reading lol.

[firebolt]

it says global variable cannot be declared at the module level. pls help. i will subscribe for sure