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This article mainly introduces how to master the relevant knowledge of Python, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this article on how to master Python. Let's take a look at it.

Python Foundation 1. Variable

You can think of a variable as a word used to store values. Let's look at an example.

It is easy to define a variable in Python and assign a value to it. If you want to store the number 1 into the variable "one", let's try it:

Python

One = 1

Isn't it super easy? You just need to assign a value of 1 to the variable "one".

Python

Two = 2

Some_number = 10000

You can assign any value to any other variable as long as you want. As you can see from above, the variable "two" stores integer variable 2 and the variable "some_number" stores 10000.

In addition to integers, we can use Boolean values (True/Flase), strings, floating-point types, and other data types.

Python

# booleanstrue_boolean = Truefalse_boolean = False# stringmy_name = "Leandro Tk" # floatbook_price = 15.80

two。 Control flow: conditional statement

"If" uses an expression to determine whether a statement is True or False, and if it is True, then execute the code in if, as shown in the following example:

Python

If True:

Print ("Hello Python If") if 2 > 1:

Print ("2 is greater than 1")

2 is larger than 1, so the print code is executed.

When the expression in "if" is false, the "else" statement will be executed.

Python

If 1 > 2:

Print ("1 is greater than 2") else:

Print ("1 is not greater than 2")

1 is smaller than 2, so the code in "else" executes.

You can also use the "elif" statement:

Python

If 1 > 2:

Print ("1 is greater than 2") elif 2 > 1:

Print ("1 is not greater than 2") else:

Print ("1 is equal to 2")

3. Loop and iteration

In Python, we can iterate in different forms. I'll talk about while and for.

While loop: when the statement is True, the code block inside the while executes. So the following code will print out 1 to 10.

Python

Num = 1while num

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