{"id":77,"date":"2020-10-03T01:14:30","date_gmt":"2020-10-03T01:14:30","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=77"},"modified":"2025-03-26T03:42:18","modified_gmt":"2025-03-26T03:42:18","slug":"python-variables","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/python-basics\/python-variables\/","title":{"rendered":"Python Variables"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn about Python variables and how to use them effectively.<\/p>\n\n\n\n

What is a variable in Python? #<\/a><\/h2>\n\n\n\n

When you develop a program, you need to manage many values. To store these values, you use variables.<\/p>\n\n\n\n

In Python, a variable is a label you can assign a value to. A variable is always associated with a value. For example:<\/p>\n\n\n

message = 'Hello, World!'<\/span>\nprint(message)\n\nmessage = 'Good Bye!'<\/span>\nprint(message)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Output:<\/p>\n\n\n
Hello, World!\nGood Bye!<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
In this example, message<\/code> is a variable. It holds the string 'Hello, World!'<\/code>. The print()<\/code> function shows the message Hello, World!<\/code> to the screen.<\/p>\n\n\n\n
The next line assigns the string 'Good Bye!'<\/code> to the message<\/code> variable and print its value to the screen.<\/p>\n\n\n\n
The variable message<\/code> can hold various values at different times. And its value can change throughout the program.<\/p>\n\n\n\n
Creating variables #<\/a><\/h2>\n\n\n\n
To define a variable, you use the following syntax:<\/p>\n\n\n
variable_name = value<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
The =<\/code> is the assignment operator. In this syntax, you assign a value to the variable_name<\/code>.<\/p>\n\n\n\n
The following defines a variable named counter<\/code> and assigns the number 1 to it:<\/p>\n\n\n
counter = 1<\/span><\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
Naming variables #<\/a><\/h2>\n\n\n\n
When you name a variable, you need to adhere to some rules. If you don’t, you’ll get an error.<\/p>\n\n\n\n
The following are the variable rules that you should keep in mind:<\/p>\n\n\n\n
The value can be anything like a number<\/a>, a string<\/a>, etc., that you assign to the variable.<\/p>\n\n\n\n
Try it<\/a><\/p>\n\n\n\n