Mastering Python Functions: A Recipe for Success

In this video, we will explore the power of functions in Python and how they can level up your coding skills. Just like a Master Chef in the kitchen, functions are the secret ingredients that make your code more organized, reusable, and delicious.

By the end of this video, you will learn how to create and call your own functions, giving you the ability to cook up some amazing code.

Imagine you are building a finance app that calculates compound interest. To handle different investments, interest rates, and time periods, you will need a function to compute compound interest.

Functions are reusable blocks of code that perform a specific task. They can take inputs, called arguments, and return outputs. Here is how you define a Python function:

# Define a function

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def compound_interest(principal, rate, time):
    # Calculate amount
    amount = principal * (1 + rate) ** time
    # Calculate interest
    interest = amount - principal
    # Return interest
    return interest

The above function calculates the interest value given the principal, rate, and time. To use the function, you simply call it by its name and provide the required arguments.

For example, let’s calculate the interest for a custom principal, rate, and time values:

# Calculate interest

interest_1 = compound_interest(1000, 0.04, 5)
interest_2 = compound_interest(2000, 0.05, 4)

# Print interest

print(interest_1)
print(interest_2)

In the next video, we will explore different types of function arguments, including positional, keyword, and default arguments, which will give you even more control and flexibility when working with functions.

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