# metaclass Is the class used to create the class
"""
1、 All things are objects ,python Of class（ class ） It's also an object （ example ）, It is tpye The object of （ example ）
2、 All classes inherit by default object
3、 The essence of creating classes is type Class instantiation class = tpye（）, So for type Category self Is the class name.
"""
# Example 1、 Demonstrates the nature of creating classes
class Foo1:
def bar(self):
print('hello Foo1')
# The following expression is completely equivalent to the above
"""
1、 All classes are tpye The object of , So creating a class is actually creating type The object of ,object Is the default parent of all classes （ Even if it is not declared when it is created ）
2、{'bar': fun} Show class Foo2 There's a function in bar, The corresponding function is fun
"""
def fun(self):
print('hello Foo2')
Foo2 = type('Foo2', (object,), {'bar': fun})
foo1 = Foo1()
foo2 = Foo2()
foo1.bar()
foo2.bar()
