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This article is about how python defines functions. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

one。 Function definition

1. First of all, we need to understand the properties of a function. We define a function in order to apply it directly later.

two。 The following function is a very simple function, let's take a look at it:

3. This function I defined as calc, used to do the addition operation, and then input two number references in this function can be added, you can also play your own.

two。 Fibonacci number

1. Fibonacci number can also be regarded as a function, the first number is 1, the second number is 1, the third number is 2, the fourth number is 3, the fifth number is 5, …

two。 Let's use a function to find any of the Fibonacci numbers.

3.

4. Can also calculate the number of the first few digits, in which I defined the function as fib, and then through the following code, can be reflected.

three。 Factorial

1. In the previous blog post, there is a loop structure to calculate the factorial, in this blog post, I will use the function to calculate the factorial.

two。 I will introduce a function to calculate the factorial (because the factorial is n! ×... X 1! So the last step must be one, so my code is as follows:

3. In this code, you only need to calculate the factorial you need to calculate, use this function to calculate Oke.

Thank you for reading! This is the end of the article on "how to define functions in python". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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