An interesting usage of the Python built-in function Type ()

This article mainly introduces an interesting usage of the Python built-in function Type (). This article describes an interesting usage that I personally found. Note that this writing method will make the code hard to read, you can refer to a piece of code of type on the Internet today and check the document to see how to use the three parameters of type.

Http://docs.python.org/2/library/functions.html#type

Previously, we only knew that type can detect object types. Then I found an interesting usage.

The code is as follows:

Def println (self ):
A = 1 + 1

Print "% s, % s" % (self. aa,)

A = type ('A', (), {'a': 'Print A', 'println': println })

A = ()

Type ()
Out [11]: _ main _.

A. println ()
Print a, 2

The first parameter is the class name, the second tuple is the parent class, and the third is the attribute.

Haha, I think it's funny. although the first parameter in My function is self, if I write a piece of code, I use this method to define the class, and then I don't pay attention to the class name specification, the code will become very difficult to read.