Python error: local variable ' totalcount ' referenced before assignment

In the process of executing a program python error: local variable ' totalcount ' referenced before assignment

phenomenon: The function defines a variable x, call the variable in the function body, and need to change the variable's worth time, it will error the local variable ' totalcount ' referenced before assignment

Solution: Define local variables as global variables in a function, plus global X

The procedure is as follows:

The global annotation is dropped on the image above, the error is generated, and the global annotation is now removed and the program is as follows: