Python--lambda function

The lambda function returns the function name as the result

• The lambda function is an anonymous function, that is, a function without a name
• Use lambda reserved word definition, the function name is to return the result
• The lambda function is used to define a simple function that can be expressed in one line

<Function name> = lambda <parameter>: <expression>

 Use lambda functions with caution

• Lambda functions are mainly used as parameters of some specific functions or methods
• Lambda functions have some fixed uses
• In general, it is recommended to use def to define ordinary functions