def press(keys, presses=1, interval=0.0, pause=None, _pause=True):
    """Performs a keyboard key press down, followed by a release.

    Args:
      key (str, list): The key to be pressed. The valid names are listed in
      KEYBOARD_KEYS. Can also be a list of such strings.
      presses (integer, optiional): the number of press repetition
      1 by default, for just one press
      interval (float, optional): How many seconds between each press.
      0.0 by default, for no pause between presses.
      pause (float, optional): How many seconds in the end of function process.
      None by default, for no pause in the end of function process.
    Returns:
      None
    """
    if type(keys) in str:
        keys = [keys] # put string in a list
    else:
        lowerKeys = []
        for s in keys:
            if len(s) > 1:
                lowerKeys.append(s.lower())
            else:
                lowerKeys.append(s)
    interval = float(interval)
    for i in range(presses):
        for k in keys:
            _failSafeCheck()
            platformModule._keyDown(k)
            platformModule._keyUp(k)
        time.sleep(interval)

    _autoPause(pause, _pause)
dataset/ETHPy150Open asweigart/pyautogui/pyautogui/__init__.py/press/operator `==` -> `in`