Tokens in Python

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Contents hide
1 Tokens in Python
1.1 Introduction
1.2 Keywords in Python
1.3 Identifiers in Python
1.4 Literals in Python
1.5 Operators in Python
1.6 Punctuators in Python
1.7 Video
1.8 PDF
1.9 Reach PostNetwork Academy
1.10 Thank You!
1.11 See Also:

Tokens in Python

Introduction

Tokens are the smallest individual units in a Python program. Everything in a Python program is built using tokens.

Python has five types of tokens:

  • Keywords: Reserved words in Python.
  • Identifiers: Names given to variables, functions, and classes.
  • Literals: Fixed values such as numbers, strings, and boolean values.
  • Operators: Symbols used for mathematical and logical operations.
  • Punctuators: Special symbols that help structure the code.

Keywords in Python

Keywords are predefined words in Python that have a specific meaning. They cannot be used as variable names, function names, or any other identifiers.

Some common keywords in Python are:

  • if, else, while, for, def, return
  • import, class, try, except, break, continue

Identifiers in Python

Identifiers are the names used to represent variables, functions, classes, and other objects in Python.

Rules for defining identifiers:

  • An identifier must start with a letter or an underscore.
  • It can contain letters, digits, and underscores but cannot start with a digit.
  • Identifiers are case-sensitive, meaning name and Name are different.
  • Python keywords cannot be used as identifiers.

Literals in Python

A literal is a constant value assigned to a variable or used directly in the code. Python has different types of literals:

  • Numeric literals, such as integers and floating-point numbers.
  • String literals, which are enclosed in quotes.
  • Boolean literals, which are either True or False.

Operators in Python

Operators are symbols used to perform operations on variables and values.

Different types of operators in Python include:

  • Arithmetic operators, such as addition, subtraction, multiplication, and division.
  • Relational operators, which compare values and return a boolean result.
  • Logical operators, which combine multiple boolean expressions.

Punctuators in Python

Punctuators are special symbols used to structure Python code.

Examples of punctuators include:

  • Parentheses, which are used in function calls.
  • Brackets, which are used for lists and indexing.
  • Braces, which are used in dictionaries.
  • Comma, colon, and semicolon, which help in separating values and statements.

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Tokens in Python

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See Also:

  1. Add Two Numbers in Python
  2. Classes and Objects in Python
  3. Python Program to Check Whether a Number is Even or Odd
  4. AI With Python
  5. Python Tutorial
  6. Factorial of a Natural Number in Python
  7. Dictionary Methods in Python
  8. Addition, Multiplication, Subtraction and Division in Python
  9. Operators in Python
  10. Mathematical Operations in Python using Object-Oriented Programming in Python
  11. User Defined Functions in Python
  12. Passing a List in a Function in Python
  13. Default Arguments in Python Functions
  14. Introduction to Python Programming | Fundamentals and Examples
  15. Python Fundamentals
  16. Sum of Natural Numbers in Python
  17. Expression in Python
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