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This article focuses on "how to understand lambda expressions". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to understand lambda expressions.

Knowing lambda expression for the first time

In fact, lambda acts like a function. Here are the parameters and return values of the python function and lambda expression.

In fact, from this point of view, the lambda syntax is very concise, generally only one line can achieve certain functions.

Why use lambda expressions

Since both lambda expressions and python functions can achieve the same effect, why use lambda expressions?

a. Sometimes where the python function cannot be used, the lambda expression can still be used, and it is more convenient and concise.

b. Functions have to be named, but this is a difficult thing to do and easy to repeat, but lambda expressions are not quite a problem.

C. the lambda expression requires only one line, which enhances the readability of the code

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