How to use Python callback functions _python

There are two types of callback functions:

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Blocking callbacks (also known as synchronous callbacks or just)
Deferred callbacks (also known as asynchronous callbacks)

So, how do you implement the callback function in Python, look at the code:

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def my_callback (input):
print ' function my_callback is called with%s input '% (input,)

def caller (input, func):
Func (Input)

For I in range (5):
Caller (i, My_callback)