tween=<function linear at 0x0000020AA8AF3C80>,
Performs pressing a mouse button down (but not up).
The x and y parameters detail where the mouse event happens. If None, the
current mouse position is used. If a float value, it is rounded down. If
outside the boundaries of the screen, the event happens at edge of the
x (int, float, None, tuple, optional): The x position on the screen where the
mouse down happens. None by default. If tuple, this is used for x and y.
If x is a str, it's considered a filename of an image to find on
the screen with locateOnScreen() and click the center of.
y (int, float, None, optional): The y position on the screen where the
mouse down happens. None by default.
button (str, int, optional): The mouse button pressed down. TODO
PyAutoGUIException: If button is not one of 'left', 'middle', 'right', 1, 2, or 3