# This program uses the PyAutoGUI module to control mouse interaction

import pyautogui, time

# Clicking the Mouse
# No delay, so don't blink
pyautogui.click(100, 150, button='left')
pyautogui.click(10, 5)
pyautogui.click(200, 250, button='right')
pyautogui.rightClick(20, 25)
pyautogui.click(300, 350, button='middle')
pyautogui.middleClick(30, 35)

pyautogui.mouseDown()  # pushes left button down at current location
pyautogui.mouseUp()  # releases left button at current location

pyautogui.doubleClick()  # double click left button

# Scrolling the Mouse
pyautogui.scroll(200)  # Units vary depending on OS and application

import pyperclip  # imports should be at top of file
numbers = ''
for i in range(200):
    numbers = numbers + str(i) + '\n'
pyperclip.copy(numbers)  # 200 lines of numbers

time.sleep(10)  # time to paste the lines in a text editor
pyautogui.scroll(100)

"""Mouse interaction

This program uses :py:mod:`PyAutoGUI` to control mouse interaction.

"""


def main():
    import pyautogui, time

    # Clicking the Mouse
    # No delay, so don't blink
    pyautogui.click(100, 150, button='left')
    pyautogui.click(10, 5)
    pyautogui.click(200, 250, button='right')
    pyautogui.rightClick(20, 25)
    pyautogui.click(300, 350, button='middle')
    pyautogui.middleClick(30, 35)

    pyautogui.mouseDown()  # pushes left button down at current location
    pyautogui.mouseUp()  # releases left button at current location

    pyautogui.doubleClick()  # double click left button

    # Scrolling the Mouse
    pyautogui.scroll(200)  # Units vary depending on OS and application

    import pyperclip  # imports should be at top of file
    numbers = ''
    for i in range(200):
        numbers = numbers + str(i) + '\n'
    pyperclip.copy(numbers)  # 200 lines of numbers

    time.sleep(10)  # time to paste the lines in a text editor
    pyautogui.scroll(100)


if __name__ == '__main__':
    main()

Update P3_mouseInteraction.py added docstring and wrapped in main function