How can I update the bank balance? This is an excersice of Head First Learn to Code

Question

https://code.sololearn.com/cEB6904IZ0xm/?ref=app
balance is a global variable and a parameter
thank you

Answer 1

You gotta access the global balance like you did with cameraon and rename the parameter balance to avoid ambiguity

https://code.sololearn.com/cVkc4rl0CBuw/?ref=app

Answer 2

thanks noname and Jay! !