What is Python Variables and how to use it?

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In Python, a variable is a symbolic name that references or points to a value. Variables are fundamental in programming because they allow you to store, modify, and retrieve data during the execution of a program. ### 1. **What is a Variable?**    - A variable is a name given to a data value. In Python, you don't need to declare a variable before using it. You simply assign a value to a variable, and Python automatically determines the data type based on the value.    - **Naming Conventions**:      - Must start with a letter (a-z, A-Z) or an underscore (_).      - Cannot start with a number.      - Can contain letters, numbers, and underscores.      - Python variables are case-sensitive (`myVar` and `myvar` are different variables).    **Example**:    ```python    x = 10    name = "Alice"    is_active = True    ```    - Here, `x`, `name`, and `is_active` are variables that store different types of values. ### 2. **Variable Assignment**    -

How to do addition in Python?

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In Python, addition can be done using the `+` operator. Here's a simple example:

```python

# Adding two numbers

a = 5

b = 3

result = a + b

print(result)  # Output: 8

```

You can also add more than two numbers or even combine variables and literals:

```python

x = 10

y = 20

z = 30

# Adding multiple numbers

total = x + y + z + 5

print(total)  # Output: 65

```

If you have any specific use case or need further examples, feel free to ask!

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