Class: a template for logical abstraction and Object generation, a set of variables and functions-specific choreography.
objects: entities that represent data and operations, equivalent to "variable " in a program.
instantiation: the process from a Class to an Object, all “objects” derived from a “Class.”.
class DemoClass:
"This is a demo for Python class"
print(type(DemoClass))
print(DemoClass.__doc__)
dc1 = DemoClass("OLD W")
dc2 = DemoClass("OLD L")
# 类对象
class DemoClass:
# 类属性,直接在类中定义赋值的
# 统一用<类名>.<属性名>访问
count = 0
def __init__(self ,name,age):
# 实例属性
# 在类内部用 self. access
# 在类外部用