# A If B Else C Python

Python is a versatile programming language that offers a variety of ways to control program flow. One such construct is the `if` statement, which allows us to execute different blocks of code depending on a condition. But what if we want to assign a value to a variable based on a condition? This is where the `if-else` statement comes in handy.

Let’s consider a scenario where we want to assign a different value to a variable based on whether a certain condition is true or false. In Python, we can achieve this using the `a if b else c` syntax. This is commonly known as the `ternary operator`.

Here’s how it works:

`result = a if b else c`

If the condition `b` evaluates to `True`, the value of `a` is assigned to `result`. Otherwise, the value of `c` is assigned.

## Personal Experience

Personally, I find the `a if b else c` syntax to be a concise and elegant way to assign values based on conditions. It allows me to write cleaner and more readable code by avoiding the need for multiple `if-else` statements or nested blocks.

For example, let’s say we have a program that calculates the total price of a product based on its quantity and a discount percentage. Using the `a if b else c` syntax, we can write the following code:

```quantity = 10 discount = 0.2 total_price = quantity * price if discount > 0 else quantity * price * (1 - discount)```

This code calculates the total price of the product by multiplying the quantity with the price. If a discount percentage is provided (i.e., if `discount > 0`), the discounted price is calculated. Otherwise, the regular price is used.

By using the `a if b else c` syntax, we can write this logic in a single line, making the code more concise and easier to understand.

### Another Example

Let’s consider another example where we have a list of numbers and we want to create a new list that contains only the even numbers. We can use the `a if b else c` syntax to achieve this:

```numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] even_numbers = [num for num in numbers if num % 2 == 0]```

In this code, we use a list comprehension with the `a if b else c` syntax to create a new list `even_numbers` that contains only the even numbers from the original list `numbers`. The condition `num % 2 == 0` checks if a number is even.

## Conclusion

The `a if b else c` syntax in Python provides a concise and elegant way to assign values based on conditions. It allows us to write cleaner and more readable code by avoiding the need for multiple `if-else` statements or nested blocks. Whether it’s calculating prices, filtering lists, or any other scenario where conditional assignment is needed, the `a if b else c` syntax comes in handy.