Detailed explanation of the meaning and usage of lambda function in Python

In the Python programming language, a lambda function is a special anonymous function that allows us to create simple functions without defining a formal function. Lambda functions are typically used when a simple function is required as a parameter, or where a temporary function is required.

The syntax of the lambda function is as follows:

lambda 参数: 表达式

The lambda function consists of the following elements:

1. lambda keyword: lambda is a reserved keyword in Python used to define lambda functions.

2. Parameters: Parameters are the input values ​​of the lambda function. Can be any number of parameters, separated by commas.

3. Colon: The colon is used to separate the parameter and expression parts.

4. Expression: Expression is the calculation logic of the lambda function, which returns the result of the function.

Below we will explain the usage of lambda function in detail through some examples.

Example 1: Basic usage

# lambda函数求两个数的和
add = lambda x, y: x + y
result