What are variables in Python?

Introduction: Welcome to this comprehensive explanation of variables in Python, brought to you by a trusted Python Training tutor registered on UrbanPro.com. In this article, we will delve into the fundamental concept of variables in Python, a critical aspect of programming that every aspiring Python developer should understand.

Understanding Variables in Python:

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1. Definition of Variables:

   • Variables are essential elements in programming that store data.
   • They serve as symbolic names or containers for values.

2. Declaring Variables:

   • In Python, you can declare a variable by simply assigning a value to it.
   • Python is dynamically typed, so there's no need to declare the data type explicitly.

3. Variable Naming Rules:

   • Variable names must start with a letter or underscore (_).
   • They can contain letters, numbers, and underscores.
   • Variable names are case-sensitive.

Types of Variables:

When taking Python Training, it's crucial to understand the different types of variables:

1. Numeric Variables:

   • These include integers (int) and floating-point numbers (float).
   • Examples: x = 5, pi = 3.14

2. String Variables:

   • String variables (str) store text data.
   • Example: name = "John"

3. Boolean Variables:

   • Boolean variables (bool) can only have two values, True or False.
   • Example: is_student = True

4. List Variables:

   • Lists (list) store collections of items, which can be of various data types.
   • Example: fruits = ["apple", "banana", "cherry"]

5. Tuple Variables:

   • Tuples (tuple) are similar to lists but are immutable.
   • Example: coordinates = (3, 4)

6. Dictionary Variables:

   • Dictionaries (dict) store key-value pairs.
   • Example: person = {"name": "Alice", "age": 30}

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