What does type() mean in python

type() is a built-in function to get the type of a variable.

The type() function has two uses. When there is only one parameter, it returns the type of the object. Returns a class object when there are three parameters.

Syntax:

type(object)
type(name, bases, dict)

Specific usage:

A parameter

type(object)

Returns the type of an object, such as:

In [1]: a = 10 
In [2]: type(a)
Out[2]: int

Three parameters

tpye(name, bases, dict)

name class name

bases tuple of parent class

dict key-value pair composed of attribute methods and values ​​of the class

Return a class object:

# 实例方法
def instancetest(self):
	print("this is a instance method")
# 类方法
@classmethod
def classtest(cls):
	print("this is a class method")
# 静态方法
@staticmethod
def statictest():
	print("this is a static method")
# 创建类
test_property = {"name": "tom", "instancetest": instancetest, "classtest": classtest, "statictest": statictest}
Test = type("Test", (), test_property)
# 创建对象
test = Test()
# 调用方法
print(test.name)
test.instancetest()
test.classtest()
test.statictest()

Output result:

tom
this is a instance method
this is a class method
this is a static method

Recommended tutorial: python tutorial

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