Demonstrates global variables : Global « Language Basics « Python






Demonstrates global variables

Demonstrates global variables


def read_global():
    print "From inside the local namespace of read_global(), value is:", value

def shadow_global():
    value = -10
    print "From inside the local namespace of shadow_global(), value is:", value
  
def change_global():
    global value
    value = -10
    print "From inside the local namespace of change_global(), value is:", value

# main
# value is a global variable because we're in the global namespace here
value = 10
print "In the global namespace, value has been set to:", value, "\n"

read_global()
print "Back in the global namespace, value is still:", value, "\n"

shadow_global()
print "Back in the global namespace, value is still:", value, "\n"

change_global()
print "Back in the global namespace, value has now changed to:", value

           
       








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