show me python script how to use the function i defined

Sure, here's an example of how to use a function in Python:

# Define a function that takes in two numbers and returns their sum
def add_numbers(num1, num2):
    return num1 + num2

# Use the function by calling it with two arguments
result = add_numbers(3, 4)

# Print the result of the function call
print(result)  # Output: 7

In this example, we define a function called add_numbers that takes in two parameters (num1 and num2) and returns their sum. We then call the function with the arguments 3 and 4, and store the result in a variable called result. Finally, we print the value of result to the console, which should be 7