A brief description of what your project does.
Basic definitions

def data_analyst():
    """
    Prints the common tools used by a data analyst.

    This function outputs a list of popular tools used by data analysts, 
    which includes Excel, Power BI, and Python.

    Example:
        data_analyst()  # Output: "excel, powerbi, python"
    """
    print("excel, powerbi, python")

data_analyst()

def add(a, b):
    """
    Adds two numbers together.

    This function takes two arguments, `a` and `b`, and returns their sum.

    Args:
        a (int or float): The first number.
        b (int or float): The second number.

    Returns:
        int or float: The sum of `a` and `b`.

    Example:
        result = add(3, 5)  # result will be 8
    """
    return a + b
