Defining and Using Functions in Python:
In Python, a function is a reusable block of code that performs a specific task or set of tasks. Functions are defined using the `def` keyword, followed by the function name and a pair of parentheses. Here's the basic syntax for defining a function:
```python
def function_name(parameters):
# Function body
# Perform tasks using parameters
# Return a result if needed
```
- `function_name`: This is the name of the function, which should follow Python's naming conventions. It's how you will call and use the function.
- `parameters` (optional): These are input values that the function can receive. Parameters are enclosed in parentheses and separated by commas. Functions can have zero or more parameters.
Inside the function body, you write the code that performs the desired tasks. You can use the parameters as inputs, perform calculations, and optionally return a result using the `return` statement.
Here's an example of a simple function that calculates the square of a number:
```python
def square(x):
result = x * x
return result
```
You can call this function by providing an argument (th....
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