Noob needs help with easy fix

[PandaLeague]

My code is not working, any fixes?

import pygame
from pygame.locals import *
import sys
import random
from os import path
snd_dir = path.join(path.dirname(__file__), 'assets')


class TripBird:
    def __init__(self):
        self.screen = pygame.display.set_mode((400, 708))
        self.bird = pygame.Rect(65, 50, 50, 50)
        self.background = pygame.image.load("assets/background.png").convert()
        self.birdSprites = [pygame.image.load("assets/plane.png").convert_alpha(),
                            pygame.image.load("assets/plane.png").convert_alpha(),
                            pygame.image.load("assets/dead.png")]
        self.wallUp = pygame.image.load("assets/bottomobstacle.png").convert_alpha()
        self.wallDown = pygame.image.load("assets/topobstacle.png").convert_alpha()
        self.gap = 130
        self.wallx = 400
        self.birdY = 350
        self.jump = 0
        self.jumpSpeed = 10
        self.gravity = 5
        self.dead = False
        self.sprite = 0
        self.counter = 0
        self.offset = random.randint(-110, 110)
    def run(self):
        clock = pygame.time.Clock()
        pygame.font.init()
        pygame.mixer.init()
        pygame.display.set_caption("Trip Bird")
        font = pygame.font.SysFont("Arial", 45)
        game_over = True
        while True:
            clock.tick(60)
            for event in pygame.event.get():
                jump_sound = pygame.mixer.Sound(path.join(snd_dir, 'jumpsound.wav'))
                if event.type == pygame.QUIT:
                    sys.exit()
                if (event.type == pygame.KEYDOWN or event.type == pygame.MOUSEBUTTONDOWN) and not self.dead:
                    self.jump = 17
                    self.gravity = 5
                    self.jumpSpeed = 10
                    jump_sound.play()
                if self.birdY == 350:
                    pygame.mixer.music.load(path.join(snd_dir,'music.ogg'))
                    pygame.mixer.music.set_volume(0.4)
                    pygame.mixer.music.play(loops=-1)
                if game_over:
                    show_go_screen():
                    draw_text(screen, "Rip", 64, Width / )
            self.screen.fill((255, 255, 255))
            self.screen.blit(self.background, (0, 0))
            self.screen.blit(self.wallUp,
                             (self.wallx, 360 + self.gap - self.offset))
            self.screen.blit(self.wallDown,
                             (self.wallx, 0 - self.gap - self.offset))
            self.screen.blit(font.render(str(self.counter),
                                         -1,
                                         (255, 255, 255)),
                             (200, 50))
            if self.dead:
                self.sprite = 2
            elif self.jump:
                self.sprite = 1
            self.screen.blit(self.birdSprites[self.sprite], (70, self.birdY))
            if not self.dead:
                self.sprite = 0
            self.updateWalls()
            self.birdUpdate()
            pygame.display.update()

    def updateWalls(self):
        self.wallx -= 4
        if self.wallx < -80: #Wall refreshes when it reaches -80 on x
            self.wallx = 400
            self.counter += 1 #Counter onlys goes up when the walls update. It doesn't update after you pass the pipe.
            self.offset = random.randint(-150, 110)

    def birdUpdate(self):

        if self.jump:
            self.jumpSpeed -= 1
            self.birdY -= self.jumpSpeed
            self.jump -= 1
            welcome()
        else:
            self.birdY += self.gravity
            self.gravity += 0.2
        self.bird[1] = self.birdY
        upRect = pygame.Rect(self.wallx,
                             360 + self.gap - self.offset + 10,
                             self.wallUp.get_width() - 10,
                             self.wallUp.get_height())
        downRect = pygame.Rect(self.wallx,
                               0 - self.gap - self.offset - 10,
                               self.wallDown.get_width() - 10,
                               self.wallDown.get_height())
        if upRect.colliderect(self.bird):
            self.dead = True
            self.gravity = 0
            self.wallx += 4
        if downRect.colliderect(self.bird):
            self.dead = True
            self.gravity = 0
            self.wallx += 4
        if not 0 < self.bird[1] < 720:
            self.bird[1] = 50
            self.birdY = 50
            self.dead = False
            self.counter = 0
            self.wallx = 400
            self.offset = random.randint(-110, 110)
            self.gravity = 5
if __name__ == "__main__":
    TripBird().run()

show_go_screen():

Gives me a syntax error saying invalid syntax, but don't know how to fix it.