Local vs Global variables

[ac812]

Add section with the following (see lecture slides):

Local example:

def print_scope():
s = "I am local"
print(s)

print_scope()
print(s)

Global example 1:
s = "I am global"

def print_scope():
print(s)

print_scope()
print(s)

Global example 2:
s = "I am global"

def print_scope():
s = "I am local"
print(s)

print_scope()
print(s)

Global example 3:
def set_scope():
global s
s = "I am global"

set_scope()
print(s) # this will print I am global