Variable And Data Types In Python - Learn Python For Beginners Free
Variables are like small boxes made in computer memory in which anything can be stored. When we declare a variable, the computer assigns certain memory to that variable. Values can be stored in the memory location of each variable. Again the value of that location can be accessed and utilized using that name when needed. Variables are the names that are used to store data in the program. In this chapter, we will learn how to do this in Python. Before that, let's find out what kind of data can be. We usually use 2 types of numbers. Integers and decimal numbers. In the language of the program, the first is an integer, the second is float and the rest of the letters and symbols are called characters.
The programming language is designed to facilitate the processing of Number, character, and string type data aggregates. This is done for the purpose of getting effective output or information. Data processing is done through the periodic execution of specific instructions or instructions used in a program. To create a program, it needs some basic elements like keyword, identifier, constant, string, some special symbols or operators, etc. Each of these elements is called a token in the C language. The characters, numbers, or symbols that are used to create these tokens can be divided into four parts. . E.g.
Letters: Upper & Lowercase from A to Z
Digits 0, 1, 2 ---- All decimal digits up to 9 Special Characters (Special Characters) Comma (,), Semicolon (;), colon (:), quotation
mark ("), backslash (\), dollar sign ($), underscore (-) & ampersand, ^ caret, * asterisk, - Minus sign, + plus sign, <opening angle bracket (or less than sign),> There are more characters on the keyboard besides Letters and Digits, including closing angle bracket, (or greater than sign).
White Spaces (Blank space), Horizontal tab, Carriage return, Newline or From feed, etc. between two letters or words.
Assigning Values to Variables
An equal (=) symbol is used to store any value in a variable. So far we have not used any variables in the chapters. So whenever we type a number text or statement in the Python console and press the Enter key, its output is shown in the next line. But if we store a value in a variable (with an equal sign) and press enter then the output will not come in the next line. Instead, the value on the right side of the equal sign will be stored in the variable on the left side of the equal sign which we can use by mentioning the name in the next statement.
Variable: Variable usually means variable. However, in the language of the program, variables are the names of certain memory ranges. However, for the convenience of programming, the data used in the program is stored in memory before being used in the program. And to save any data in memory, you need to know the address of the memory location in which you want to save, which is a difficult task for the program. To avoid this complication, one or more memory cell names are used and the data is stored under that name instead of directly using the memory location address to store the data during programming. The main purpose of using this variable to name the memory cell used by the programmer in the program is to use the address of the memory location to store the data in the memory location. This variable can have any name, but there are some rules to follow in determining the name of a variable in the Python program. It is discussed below: Read more here Variable And Data Types In Python.
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