#!/usr/bin/python
# Filename: for.py

for i in range(1, 5):
    print i
else:
    print ‘The for loop is over‘

#!/usr/bin/python
# Filename: func_local.py

def func(x):
    print ‘x is‘, x
    x = 2
    print ‘Changed local x to‘, x

x = 50
func(x)
print ‘x is still‘, x

#!/usr/bin/python
# Filename: func_global.py

def func():
    global x

    print ‘x is‘, x
    x = 2
    print ‘Changed local x to‘, x

x = 50
func()
print ‘Value of x is‘, x