[Tutor] global and local vaiables

[Jason]

i know that when you define a variable in a function it is defined as a local variable.
and that when you type return variable it will set the value of that variable to a global variable and that it will then exit the function
but say i wanted to define variable x as a global variable and then do something else in the function
how would i do that?

to be a bit more specific i have this function:

1. def sign_in(number,account,password):
2.     if number.has_key(account) and number[account]==password:
3.         account = account+".txt"
4.         load_numbers(numbers,account)
5.         display_menu()
6.         return account
7.     else:
8.         print "Either the account name or password was wrong,\nplease remember that the account names are CASE SESITIVE"
9.         print
10.         welcome()

and i need to return account as a global variable before display_menu()

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