Basic Python and python tutorials

Basic Python and python tutorials

Python is a flexible language. You can see this by looking at the access mechanism of its class and instance attributes, but this is really hard to understand, after some tests, I understand that:

When an instance accesses the class attribute, it first retrieves its own names. If so, it will retrieve them directly. If not, it will find the names in the class. If not, it will be an error.

 

Class Pclass (object): "docstring for Pclass" num = 10 def _ init _ (self): super (Pclass, self ). _ init _ () p = Pclass () print (p. num) # 10p. num = p. num + 1 print (p. num) #11 print (Pclass. num) # 10Pclass. age = 12 print (Pclass. age) #12 print (p. age) # 12p. XXXXX = 555 print (p. xxx) #555 print (Pclass. xxx) # AttributeError: type object 'pclass 'has no attribute 'xxx'