我正在尝试为我的班级制作一个测验，允许用户参加测验，但仅限于海龟图形，因此测验问题将出现在 Turtle 图形屏幕中，他们将通过按屏幕中标记为 a、b、c 或 d 的部分来选择他们想要的答案。我遇到的问题是，当用户选择他们的选择时，我不知道如何出现一个新问题，而且我不知道 turtle.listen 是如何工作的。有什么想法吗？
这是我到目前为止所拥有的：
import time
import turtle
x = turtle.xcor()
y = turtle.ycor()
Slytherin = 0
Griffindor = 0
Hufflepuff = 0
Ravenclaw = 0
def introduction():
turtle.penup()
turtle.goto(10,150)
turtle.write("n This code is a quiz that will determine what Hogwart house you belong in:n Slytherin, Griffindor, Hufflepuff, or Ravenclaw! n n You will be asked quiz questions on this screen, and then n when you want to answer, you tell the program n what you chose by pressing the corresponding section. n", align = "center" , font=("Arial", 20, "normal"))
def user_interface():
turtle.setup(700, 700)
turtle.screensize(700, 700)
turtle.setworldcoordinates(0, 0, 500, 500)
turtle.penup()
turtle.setpos(125, 180)
turtle.pendown()
turtle.setpos(125, 0)
turtle.penup()
turtle.setpos(62.5, 90)
turtle.write("a", font=("Arial", 40, "normal"))
turtle.setpos(250, 0)
turtle.pendown()
turtle.setpos(250, 180)
turtle.penup()
turtle.setpos(187.5, 90)
turtle.write("b", font=("Arial", 40, "normal"))
turtle.setpos(375, 0)
turtle.pendown()
turtle.setpos(375, 180)
turtle.penup()
turtle.setpos(312.5, 90)
turtle.write("c", font=("Arial", 40, "normal"))
turtle.setpos(437.5, 90)
turtle.write("d", font=("Arial", 40, "normal"))
turtle.setpos(0,180)
turtle.right(90)
turtle.pendown()
turtle.setpos(500, 180)
def shapedrawer(x, y):
turtle.penup()
turtle.setpos(x, y)
turtle.pendown()
turtle.begin_fill()
#First Column
if x <= 125 and 0 <= y <= 180:
turtle.color("green")
turtle.circle(10)
Slytherin += 1
#Second Column
elif 125 < x <= 250 and 0 <= y <= 180:
turtle.color("red")
turtle.circle(10)
Griffindor += 1
#Third Column
elif 250 < x <= 375 and 0 <= y <= 180:
turtle.color("purple")
turtle.circle(10)
Hufflepuff += 1
#Fourth Column
elif 375 < x <= 500 and 0 <= y <= 180:
turtle.color("blue")
turtle.circle(10)
Ravenclaw += 1
turtle.end_fill()
def candy_question():
turtle.penup()
turtle.goto(100, 350)
turtle.write("What is your favorite type of candy? n a. Bertie Bott's Every Flavour Beans n b. Honeydukes Sherbet Lemons n c. Chocolate Frogs n d. Candy Floss", font=("Arial", 20, "normal"))
def pet_question():
turtle.penup()
turtle.goto(170, 250)
turtle.write("Which is animal would you prefer as a pet? n a. A lizard n b. A cat n c. A dog n d. A ferret", font=("Arial", 20, "normal"))
def class_question():
turtle.penup()
turtle.goto(170, 350)
turtle.write("Which is your favorite class? n b. Potions n a. Charms n c. History of Magic n d. Transfiguration", font=("Arial", 20, "normal"))
def color_question():
turtle.penup()
turtle.goto(170, 350)
turtle.write("Pick your favorite color n a. Blue n b. Purple n c. White n d. Orange", font=("Arial", 20, "normal"))
def life_question():
turtle.penup()
turtle.goto(130, 350)
turtle.write("If you could only do one thing for the rest n of your life what would you do? n a. Explore the World n b. Start your own company n c. Stay in school forever n d. I don't know", font=("Arial", 20, "normal"))
def vacation_question():
turtle.penup()
turtle.goto(200, 150)
turtle.write("If you were going on a vacation, you would go to... n a. London n b. The wilderness n c. Home, to your family n d. The beach", font=("Arial", 20, "normal"))
def main_loop(x,y):
introduction()
time.sleep(5)
user_interface()
turtle.onscreenclick(shapedrawer)
pet_question()
turtle.listen()
while turtle.onclick(x) == 0 < x < 125:
turtle.clear()
candy_question()
main_loop(x,y)
turtle.mainloop()
使用事件时，您将控制权移交给 turtle 的事件处理程序，并且您不能再提前确定何时提出问题。
解决方案是创建一个问题列表(在本例中为问题函数列表(，并在回答下一个问题后shapedrawer()触发下一个问题：
import time
import turtle
turtle.setup(700, 700)
turtle.screensize(700, 700)
turtle.setworldcoordinates(0, 0, 500, 500)
TEXTFONT = ("Arial", 20, "normal")
QUIZFONT = ("Arial", 40, "normal")
Slytherin = 0
Griffindor = 0
Hufflepuff = 0
Ravenclaw = 0
def introduction():
marker_turtle.penup()
marker_turtle.goto(250, 200)
marker_turtle.write("""
This code is a quiz that will determine what Hogwart house you
belong in: Slytherin, Griffindor, Hufflepuff, or Ravenclaw!
You will be asked quiz questions on this screen, and
then when you want to answer, you tell the program
what you chose by pressing the corresponding section
""", align="center", font=TEXTFONT)
def user_interface():
turtle.penup()
turtle.setpos(62.5, 90)
turtle.write("a", font=QUIZFONT)
turtle.setpos(125, 180)
turtle.pendown()
turtle.setpos(125, 0)
turtle.penup()
turtle.setpos(187.5, 90)
turtle.write("b", font=QUIZFONT)
turtle.setpos(250, 0)
turtle.pendown()
turtle.setpos(250, 180)
turtle.penup()
turtle.setpos(312.5, 90)
turtle.write("c", font=QUIZFONT)
turtle.setpos(375, 0)
turtle.pendown()
turtle.setpos(375, 180)
turtle.penup()
turtle.setpos(437.5, 90)
turtle.write("d", font=QUIZFONT)
turtle.setpos(500, 180)
turtle.right(90)
turtle.pendown()
turtle.setpos(0, 180)
turtle.hideturtle()
def shapedrawer(x, y):
global Slytherin, Griffindor, Hufflepuff, Ravenclaw
turtle.onscreenclick(None)
marker_turtle.penup()
marker_turtle.setpos(x, y)
marker_turtle.pendown()
# First Column
if 0 <= x <= 125 and 0 <= y <= 180:
marker_turtle.dot(20, "green")
Slytherin += 1
# Second Column
elif 125 < x <= 250 and 0 <= y <= 180:
marker_turtle.dot(20, "red")
Griffindor += 1
# Third Column
elif 250 < x <= 375 and 0 <= y <= 180:
marker_turtle.dot(20, "purple")
Hufflepuff += 1
# Fourth Column
elif 375 < x <= 500 and 0 <= y <= 180:
marker_turtle.dot(20, "blue")
Ravenclaw += 1
time.sleep(5)
marker_turtle.clear()
marker_turtle.color("black")
if questions:
(questions.pop(0))()
turtle.onscreenclick(shapedrawer)
else:
# here's where you display the results!
# first erase the default turtle too.
pass
def candy_question():
marker_turtle.penup()
marker_turtle.goto(100, 350)
marker_turtle.write("""
What is your favorite type of candy?
a. Bertie Bott's Every Flavour Beans
b. Honeydukes Sherbet Lemons
c. Chocolate Frogs
d. Candy Floss""", font=TEXTFONT)
def pet_question():
marker_turtle.penup()
marker_turtle.goto(170, 250)
marker_turtle.write("""
Which is animal would you prefer as a pet?
a. A lizard
b. A cat
c. A dog
d. A ferret""", font=TEXTFONT)
def class_question():
marker_turtle.penup()
marker_turtle.goto(170, 350)
marker_turtle.write("""
Which is your favorite class?
b. Potions
a. Charms
c. History of Magic
d. Transfiguration""", font=TEXTFONT)
def color_question():
marker_turtle.penup()
marker_turtle.goto(170, 350)
marker_turtle.write("""
Pick your favorite color:
a. Blue
b. Purple
c. White
d. Orange""", font=TEXTFONT)
def life_question():
marker_turtle.penup()
marker_turtle.goto(130, 350)
marker_turtle.write("""
If you could only do one thing for the
rest of your life what would you do?
a. Explore the World
b. Start your own company
c. Stay in school forever
d. I don't know""", font=TEXTFONT)
def vacation_question():
marker_turtle.penup()
marker_turtle.goto(150, 250)
marker_turtle.write("""
If you were going on a vacation,
you would go to:
a. London
b. The wilderness
c. Home, to your family
d. The beach""", font=TEXTFONT)
questions = [pet_question, class_question, color_question, life_question, vacation_question]
marker_turtle = turtle.Turtle(visible=False)
introduction()
time.sleep(5)
marker_turtle.clear()
user_interface()
(questions.pop(0))()
turtle.onscreenclick(shapedrawer)
turtle.listen()
turtle.mainloop()
另一个关键变化是屏幕永久部分和要擦除的海龟分开。 我也稍微修饰了一下风格。 现在您需要添加最终屏幕以显示结果 - 我留下了一个存根，指示可以在哪里完成。