[Python] Python add to a function dynamically

how do i add code to an existing function, either before or after?

for example, i have a class:

class A(object):
def test(self):
print "here"


how do i edit the class wit metaprogramming so that i do this

class A(object):
def test(self):
print "here"

print "and here"


maybe some way of appending another function to test?

add another function such as

def test2(self):
print "and here"


and change the original to

class A(object):
def test(self):
print "here"
self.test2()


is there a way to do this?

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