How to use the pyautogui.press function in PyAutoGUI

def inject_input(injection_type, arg):
    try:
        if injection_type == 'ty':
            if not arg:
                s.sendall('[-]Supply a key as an arg'+End)
                return
            pyautogui.typewrite(arg)
            s.sendall('[+]Injected typewritten character/s' + End)
        elif injection_type == 'pr':
            if not arg:
                s.sendall('[-]Supply a key as an arg'+End)
                return
            pyautogui.press(arg)
            s.sendall('[+]Injected pressed key' + End)
        elif injection_type == 'sh':
            if not arg:
                s.sendall('[-]Supply a key as an arg'+End)
                return
            if ' ' in arg:
                arg = arg.split(' ')
                for key in arg:
                    pyautogui.keyDown(key)
                for key in reversed(arg):
                    pyautogui.keyUp(key)
                s.sendall('[+]Injected keyboard shortcut' + End)
            else:
                pyautogui.hotkey(arg)
                s.sendall('[+]Injected keyboard shortcut' + End)
        elif injection_type == 'valids':

pyautogui.click()
	# type in item
	random_typer(str(ge_slot.item.item_name))
	wait_for(ge_slot.item.image_in_ge_search, runescape_window)
	# click item
	move_mouse_to_image_within_region(ge_slot.item.image_in_ge_search, runescape_window)
	pyautogui.click()
	# click price box
	coords_of_price_box = pointfrombox.random_point((runescape_window.bottom_right_corner[0]-384, runescape_window.bottom_right_corner[1]-272),
		(runescape_window.bottom_right_corner[0]-291, runescape_window.bottom_right_corner[1]-259))
	realmouse.move_mouse_to(coords_of_price_box[0], coords_of_price_box[1])
	pyautogui.click()
	time.sleep(random.random()+1)
	# type in correct price and hit enter
	random_typer(str(ge_slot.item.price_instant_sold_at))
	pyautogui.press('enter')
	# click quantity box
	move_mouse_to_image_within_region("Tools/screenshots/quantity_box.png", runescape_window)
	pyautogui.click()
	time.sleep(random.random()+2)
	# type in correct quantity and hit enter
	ge_slot.item.set_quantity_to_buy(int(min(ge_slot.item.number_available_to_buy, (runescape_window.money/ge_slot.item.price_instant_sold_at)/runescape_window.number_of_empty_ge_slots)))
	runescape_window.update_money(runescape_window.money - (ge_slot.item.quantity_to_buy*ge_slot.item.price_instant_sold_at))
	random_typer(str(ge_slot.item.quantity_to_buy))
	time.sleep(random.random())
	pyautogui.press('enter')
	# click confirm off
	move_mouse_to_image_within_region("Tools/screenshots/confirm_offer_button.png", runescape_window)
	pyautogui.click()
	ge_slot.item.set_time_item_buy_was_placed()
	wait_for('Tools/screenshots/lent_item_box.png', runescape_window)
	# update states accordingly

def calibrate_dota_client():
    gui.press('\\', pause=PAUSE)
    gui.typewrite('sv_cheats 1', interval=TYPEWRITE_INT)
    gui.press('enter', pause=PAUSE)
    gui.typewrite('host_timescale 5', interval=TYPEWRITE_INT)
    gui.press('enter', pause=PAUSE)
    gui.press('\\', pause=PAUSE)

def pressAction(self, key):
        print( "----------> PRESSING " + key )
        pyautogui.press( key )

player = request.json.get('player', {})
    round = request.json.get('round', {})
    
    if player['steamid'] != mySteamID or player['state']['health'] == 0 or round['phase'] in ('freezetime','warmup','over'):
        lastCheck = 'PlayMusic'
    else:
        lastCheck = 'StopPlaying'

    if lastCheck == 'PlayMusic' and state == 'StopPlaying':
        print(lastCheck)
        sleep(deathDelay)
        pyautogui.press('playpause')
        state = lastCheck
    elif lastCheck != state:
        print(lastCheck)
        pyautogui.press('playpause')
        state = lastCheck

def press_ability( self, key ):
		print( "pressing " + key )
		press( key )

def keep_delete_model(key='k'):
    import pyautogui
    click(200, 1300)
    # click(80, 1020)
    pyautogui.press(key)
    pyautogui.press('enter')

def do_keypress(img, center, row_keys_points):
	# this fuction presses a key and marks the pressed key with blue color
	for row in row_keys_points:
		arr1 = list(np.int0(np.array(center) >= np.array(row[1])))			# center of the contour has greater value than the top left corner point of a key 
		arr2 = list(np.int0(np.array(center) <= np.array(row[2])))			# center of the contour has less value than the bottom right corner point of a key 
		if arr1 == [1, 1] and arr2 == [1, 1]:
			if row[0] == '<-':
				gui.press('backspace')
			else:
				gui.press(row[0])
			cv2.fillConvexPoly(img, np.array([np.array(row[1]), \
												np.array([row[1][0], row[2][1]]), \
												np.array(row[2]), \
												np.array([row[2][0], row[1][1]])]), \
												(255, 0, 0))
	return img

board.backGroundColor(0, 0, 0)
board.textBackColor(0, 0, 0)
board.setFont(Font.peanut)
board.rotateDisplay(board.rotate_0)
board.penColor(255, 255, 0)
board.drawText('REMOTE CONTROL', 50, 140)
rc1 = 0
rc2 = 0
while True:
    board.getSensorData()
    rc1 = board.RemoteCode
    if (rc1 != 0) or (rc1 == rc2):
        board.drawText(rc1, 50, 160)
        #volume up
        if rc1 == '4BB0':
            pyautogui.press('volumeup')
            board.ledWrite(Red, On)
        #volume down
        elif rc1 == '5BA0':
                pyautogui.press('volumedown')
                board.ledWrite(Green, On)
            #backspace
        elif rc1 == '9C60':
                pyautogui.press('space')
                board.ledWrite(Blue, On)
            #right
        elif rc1 == 'AC50':
                pyautogui.press('right')
                board.ledWrite(Green, On)
            #left
        elif rc1 == '8C70':
                pyautogui.press('left')

for i in range(0, self.__j.get_numaxes()):
            out[it] = self.__j.get_axis(i)
            if(-0.80.9):
           pyautogui.press('right')
           self.key_debounce()
        if(out[3]>0.9):
            pyautogui.press('down')
            self.key_debounce()
        if(out[2]<-0.9):
            pyautogui.press('left')
            self.key_debounce()
        if(out[3]<-0.9):
            pyautogui.press('up')
            self.key_debounce()


        for i in range(0,self.__j.get_numhats()):
            dire=self.__j.get_hat(i)

        #Read input from buttons
        for i in range(0, self.__j.get_numbuttons()):
            out[it] = self.__j.get_button(i)
            it+=1

        if(out[8]):
            if(not self.__pressed_s_c[0]):