Global <var1> [, <var2>, ...] [= <expr1> [, <expr2>, ...]]
Global statement is used to tell Hollywood that the specified variable
should be global. Additionally, it can also initialize your variable. This
statement is only included to improve the readability of your program. You
could also leave it out and the code would work the same way. The
statement works exactly like the Local statement.
If you use the
Global statement, it is advised that you place all statements
at the beginning of your code. So everyone can clearly see which variables
are globally available. Using
Global elsewhere in your code is generally not suggested and can be quite
confusing to read.
See Global variables for details.