当我运行这个程序时，它在到达display_pipe方法时给出了一个类型错误，因为它不认为其中一个变量是int，当每个参数作为int输入，而所有其他变量都是方法是整数。
'''This is a simple replica of flappy bird for the pc that I made to help me
understand python.'''
import random
import pygame
from pygame import *
import math
import sys
#Presets for window
size=width,height=500,500
Ag=-9.80665
clock = pygame.time.Clock()
white=(255,255,255)
blue=(0,0,255)
red=(255,0,0)
gray_bgColor=(190,193,212)
#Initialise pygame Surface as screen
pygame.init()
pygame.font.init()
#Creates icon for window
screen=pygame.display.set_mode(size)
pygame.display.set_caption("Flappy Bird Replica")
icon = pygame.image.load("images/icon.png").convert()
pygame.display.set_icon(icon)
class graphics():
#Holds the methods for loading/displaying graphics
def load_images(self):
#Loads the background and sprite images
self.background_image=pygame.image.load("images/flappy_background.png").convert()
self.bird_image=pygame.image.load("images/flappy_sprite.jpg").convert()
self.pipe_image=pygame.image.load("images/flappy_pipe.png").convert()
self.pipe_image.set_colorkey(white)
self.inverted_pipe_image=pygame.transform.flip(self.pipe_image,False,True)
self.bird_image.set_colorkey(white)
def display_pipe(self,pipe_xPos,pipe_height):
#Calculates new position of pipe
pipe_yPos=318
pipe_vX=-1
inverted_pipe_yPos=0
#Checks if there is a pre-existing velocity and xPosition
#and assigns defaults
if pipe_xPos==None or pipe_xPos<=-78:
pipe_xPos=500
pipe_height=random.randrange(0,3)
pipe_xPos+=pipe_vX
#Randomizes the height of the pipes
if pipe_height==0:
self.inverted_pipe_image=pygame.transform.scale(self.inverted_pipe_image,(self.inverted_pipe_image.get_width(),200))
elif pipe_height==1:
self.inverted_pipe_image=pygame.transform.scale(self.inverted_pipe_image,(self.inverted_pipe_image.get_width(),150))
elif pipe_height==2:
self.inverted_pipe_image=pygame.transform.scale(self.inverted_pipe_image,(self.inverted_pipe_image.get_width(),100))
screen.blit(self.pipe_image,[pipe_xPos,pipe_yPos])
screen.blit(self.inverted_pipe_image,[pipe_xPos,0])
return pipe_height
def display_loop(self,bird_vY,bird_yPos,pipe_xPos,pipe_height):
#Calculates new position of bird
bird_xPos=200
jumpspeed=-1.7
fallspeed=0.02
#Checks if there is a pre-existing velocity and yPosition
#and assigns defaults
if bird_vY==None or bird_yPos==None:
bird_vy=0
bird_yPos=200
for event in pygame.event.get():
if event.type==pygame.KEYDOWN:
if event.key==pygame.K_UP:
bird_vY=jumpspeed
bird_vY+=fallspeed
bird_yPos+=bird_vY
#Blits all the images to the screen
screen.blit(self.background_image,[0,0])
screen.blit(self.bird_image,[bird_xPos,bird_yPos])
pipe_xPos,pipe_height=self.display_pipe(pipe_xPos,pipe_height)
pygame.display.flip()
return bird_vY,bird_yPos,pipe_xPos,pipe_height
class titleScreen():
#Holds the methods for the title screen/menu
def title(self):
#Different fonts
titleFont=pygame.font.SysFont("verdana",30,bold=True,italic=True)
startFont=pygame.font.SysFont("verdana",25,bold=False,italic=False)
quitFont=pygame.font.SysFont("verdana",25,bold=False,italic=False)
#Sets up the title
titleText="Flappy Game"
titlePos=(0,0)
renderTitle=titleFont.render(titleText,1,blue,gray_bgColor)
titlex,titley=titleFont.size(titleText)
screen.blit(renderTitle,titlePos)
#Sets up the start button
startText="Start Game"
startPos=(0,titley)
renderStart=startFont.render(startText,1,blue,gray_bgColor)
startx,starty=startFont.size(startText)
self.start_rect = pygame.Rect(startPos[0],titley,startx,starty)
screen.blit(renderStart,startPos)
#Sets up the quit button
quitText="Quit"
quitPos=(0,starty+titley)
renderQuit=quitFont.render(quitText,1,red,gray_bgColor)
quitx,quity=quitFont.size(quitText)
self.quit_rect = pygame.Rect(quitPos[0],titley+starty,quitx,quity)
screen.blit(renderQuit,quitPos)
def get_click(self):
#Gets mouse click and processes outcomes
for event in pygame.event.get():
if event.type==pygame.MOUSEBUTTONDOWN:
x,y=pygame.mouse.get_pos()
#Tests for start:
if self.start_rect.collidepoint(x,y):
print("start")
return True
elif self.quit_rect.collidepoint(x,y):
print("quit")
sys.exit()
else:
return False
#Assign objects to respective classes
titleC=titleScreen()
graphicsC=graphics()
def showTitle():
#bundles all title_screen functions
screen.blit(graphicsC.background_image,[0,0])
titleC.title()
pygame.display.flip()
def main():
graphicsC.load_images()
while True:
title=True
while title==True:
showTitle()
start=titleC.get_click()
if start==True:
title=False
bird_yPos=200
bird_vY=0
pipe_xPos=500
pipe_height=1
while title==False:
bird_vY,bird_yPos,pipe_xPos,pipe_height=graphicsC.display_loop(bird_vY,bird_yPos,pipe_xPos,pipe_height)
pygame.time.delay(3)
if bird_yPos>=height-120:
title=True
main()
错误：
Traceback (most recent call last):
File "C:\Users\Klaus\Documents\coding\python stuff\pygames\Flappy Python\flappy_bird_source.py", line 162, in <module>
main()
File "C:\Users\Klaus\Documents\coding\python stuff\pygames\Flappy Python\flappy_bird_source.py", line 158, in main
bird_vY,bird_yPos,pipe_xPos,pipe_height=graphicsC.display_loop(bird_vY,bird_yPos,pipe_xPos,pipe_height)
File "C:\Users\Klaus\Documents\coding\python stuff\pygames\Flappy Python\flappy_bird_source.py", line 85, in display_loop
pipe_xPos,pipe_height=self.display_pipe(pipe_xPos,pipe_height)
TypeError: 'int' object is not iterable
答案 0 :(得分：2)
display_pipe()返回一个整数。
您正在尝试将pipe_xPos,pipe_height指定给返回值，就好像它是一个包含两个元素的元组。
如果您想从pipe_xPos返回pipe_height和display_pipe()的值，请将返回行更改为：
return pipe_xPos, pipe_height