python--Object-oriented supplementary instructions

Additional notes:

1, the station angle is different, the definition of the class is different

2, the real class is not exactly equal to the class in the program, such as the real company class, in the program sometimes need to split into departmental class, business class, etc.

3, sometimes in order to programming requirements, the program may also define the real non-existent classes, such as the policy class, the reality does not exist, but in the program is really a very common class

All objects in Python, the concept of class and type is unified in Python3

For example:

Print (Type ([1, 2])) results

<class ' list ' > for List class,

Print (list)
Print (luffystudent)
The result is:

<class ' list ' > listing classes
<class ' __main__. Luffystudent ' > function class

There is also a list:

L = list ([+])
Print (L)
The result is: [1, 2, 3] equivalent to the list class example of an object

L1 = [A]
L2 = []
List.append (L1, 4)
Print (L1)
The results are: [1, 2, 3, 4] and L1.append (4) is the same effect, the object calls the Function property, the object is passed to self by default, if the class is executed, but also to pass in the object, so the execution is also more troublesome, the reality is seldom used in this way,

python--Object-oriented supplementary instructions