Bound method

[Uchikago]

Hi, i'm new to python and i have a quesition about method:

When i try this:

class Test:
    def test1():
        pass
a=Test()
print(Test.test1)
print(a.test1)

It printed out:

<function Test.test1 at 0x7fba4f2646a8>
<bound method Test.test1 of <__main__.Test object at 0x7fba510ee8d0>>

What is the differences between function and bound method ?