#These are some global variables, aptly named.
global_variable = ['That', 'is','global']
also_global = ' '.join(global_variable) + '.' #Thought I'd try this out. Just read it in DIP.

print global_variable
print also_global

def do_stuff():
    """This is a function that prints out the items in a local list."""
    local_variable = ['This','is','local']
    for item in local_variable:
        print item

# Calling that function.
do_stuff()

def do_more_stuff():
    """This function capitalizes every letter in also_global and calls it out like a cheerleader."""
    for letter in also_global[:-1]:
        if letter == ' ':
            print '\n'
        else:
            print 'Give me a ' + letter.upper()
    print "\n" + also_global[:-1].upper() + '!'

do_more_stuff()

def do_things():
    """This function tries to do the same thing with local_variable,
    but it can't, because it doesn't know about it. local_variable is
    only known to do_stuff()."""
    for item in local_variable:
        print item

# This call will raise a NameError.
do_things()