注意力集中游戏要求用户在将一张牌与匹配的牌正确匹配之前能够将其翻转多次。这不是一直有效吗?它在第一次翻牌时就起作用了,但如果这张牌被跳过一圈,之后就会出现未定义的行为
import turtle
from turtle import *
import tkinter.font
from tkinter import *
import time
t = turtle.Turtle()
screen = Screen()
screen.setup(width=800, height=800, startx=10, starty=10)
eraseble = []
''' this function allows the square to be erased and rewriten '''
def erasableWrite(tortoise, name, font, align, reuse=None):
eraser = turtle.Turtle() if reuse is None else reuse
eraser.hideturtle()
eraser.up()
eraser.setposition(tortoise.position())
eraser.write(name, font=font, align=align)
print('eraser = {} name = {}.'.format(eraser, name))
return eraser
startX = -280
startY = -295
textValue = [('1', 'a'), ('2', 'b'), ('3', 'c')]
t.hideturtle()
turtle.speed(0)
t.penup()
counter = 0
count = 0
for n in range(3):
t.goto(startX, startY)
t.pendown()
eraseble.append(erasableWrite(t, textValue[n][0], font=("New Times Roman", 18, "normal"), align="center"))
print('count = {}, eraseble[counter] = {} counter = {} n = {} textvalue = {}. '.format(count, eraseble[counter], counter, n, textValue[n][0]))
time.sleep(2)
count += 1
eraseble[counter].clear()
eraseble.append(erasableWrite(t, textValue[n][1], font=("New Times Roman", 18, "normal"), align="center"))
time.sleep(2)
eraseble[counter + 1].clear()
print('eraseble[counter] = {} counter = {} n = {} textvalue = {}. '.format(eraseble[counter], counter, n, textValue[n][1]))
eraseble[counter -1] = (erasableWrite(t, textValue[n][0], font=("New Times Roman", 18, "normal"), align="center"))
count +=1
startX +=40
startY += 20
t.penup()
counter +=2
` replace 1 with a `
startX = -280
startY = -295
t.goto(startX, startY)
print('count = {}, eraseble[0] = {}'.format(count, eraseble[0]))
count +=1
eraseble[0].clear()
textVal = textValue[0][0]
eraseble[0] = (erasableWrite(t, textVal, font=("New Times Roman", 18, "normal"), align="center"))
print('count = {}, eraseble[0] = {}'.format(count, eraseble[0]))
count +=1
eraseble[0].clear()
textVal = textValue[0][1]
eraseble[1] = (erasableWrite(t, textVal, font=("New Times Roman", 18, "normal"), align="center"))
time.sleep(2)
print('\n\neraseble = {} !...!'.format(eraseble))
您似乎混淆了返回值和
reuse
参数到erasableWrite
的工作方式。我在下面重写了您的示例代码(稍微夸大了字体和距离):它显示三张“卡”及其值,然后返回并再次公开第一张卡的值,然后再将其遮盖
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