使用乌龟图形的岩石剪刀游戏-键不起作用

Question

我正在尝试在乌龟中创建剪刀石头布游戏。玩家在电脑前玩游戏，他需要通过按“ r”，“ p”或“ s”来捡石头或剪刀。在将键链接到返回选择的功能时，我发现了问题。

我正在使用一些形状和文字来向播放器提供信息。它是如何工作的，我创建了3个返回石头或剪刀的函数，并且应该使用.listen（）和onkeypress（）+一些if语句将它们链接到键“ r”，“ p”，“ s”。

我收到错误：

Exception in Tkinter callback
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/tkinter/__init__.py", line 1705, in __call__
    return self.func(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/turtle.py", line 701, in eventfun
    fun()
TypeError: 'str' object is not callable
Exception in Tkinter callback
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/tkinter/__init__.py", line 1705, in __call__
    return self.func(*args)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/turtle.py", line 701, in eventfun
    fun()
我的代码：

import turtle
import random

#Creating the screen
wn = turtle.Screen()
wn.title('Rock Paper Scissors')
wn.bgcolor('black')
wn.setup(800, 600)
wn.tracer(0)


#Shape 1
rock = turtle.Turtle()
rock.shape('square')
rock.goto(170,100)
rock.speed(0)
rock.color('#964B00')
rock.shapesize(stretch_wid=5, stretch_len=5)
rock.penup()


#Shape 2
paper = turtle.Turtle()
paper.shape('square')
paper.goto(-170,100)
paper.speed(0)
paper.color('white')
paper.shapesize(stretch_wid=5, stretch_len=5)
paper.penup()


#Shape 3
scissors = turtle.Turtle()
scissors.shape('square')
scissors.goto(0,-170)
scissors.speed(0)
scissors.color('blue')
scissors.shapesize(stretch_wid=5, stretch_len=5)
scissors.penup()


#Top text, winner.
pen = turtle.Turtle()
pen.speed(0)
pen.color('white')
pen.penup()
pen.hideturtle()
pen.goto(0, 240)
pen.write("Who wins: ", align="center", font=("Courier", 24))


#Rock choice.
pen1 = turtle.Turtle()
pen1.speed(0)
pen1.color('white')
pen1.penup()
pen1.hideturtle()
pen1.goto(170, 152)
pen1.write('Rock[R]', align="center", font=("Courier", 16))

#Papper choice
pen2 = turtle.Turtle()
pen2.speed(0)
pen2.color('white')
pen2.penup()
pen2.hideturtle()
pen2.goto(-168, 152)
pen2.write('Paper[P]', align="center", font=("Courier", 16))

#Scissors choice
pen3 = turtle.Turtle()
pen3.speed(0)
pen3.color('white')
pen3.penup()
pen3.hideturtle()
pen3.goto(0, -118)
pen3.write('Scissors[S]', align="center", font=("Courier", 16))


#Player choosing the rock,paper,scissors by pressing specific keys.
def rockfn():
    player_pick = 'rock'
    return player_pick.title()

def paperfn():
    player_pick = 'paper'
    return player_pick.title()

def scissorsfn():
    player_pick = 'scissors'
    return player_pick.title()


#Computer random choice
r = 'Rock'
p = 'Paper'
s = 'Scissors'
choice = [r, p, s]
computer_choice = random.choice(choice)


#Keys for player choice.
wn.listen()
wn.onkeypress(rockfn, 'r')
wn.onkeypress(paperfn, 'p')
wn.onkeypress(scissorsfn, 's')


#Main Loop
while True:
    wn.update()

    if rockfn() or paperfn() or scissorsfn() == computer_choice:
        pen.clear()
        pen.write("It's a draw", align="center", font=("Courier", 24))

    if wn.onkeypress(rockfn(), 'r'):
        if computer_choice == 'paper'.title():
            pen.clear()
            pen.write("Computer picked {}, you lost.".format(p.title()), align="center", font=("Courier", 24))
        else:
            pen.clear()
            pen.write('Computer picked {}, you win.'.format(s.title()), align="center", font=("Courier", 24))

    if wn.onkeypress(paperfn(), 'p'):
        if computer_choice == 'scissors'.title():
            pen.clear()
            pen.write('Computer picked {}, you lost.'.format(s.title()), align="center", font=("Courier", 24))
        else:
            pen.clear()
            pen.write('Computer picked {}, you win.'.format(r.title()), align="center", font=("Courier", 24))

    if wn.onkeypress(scissorsfn(), 's'):
        if computer_choice == 'rock'.title():
            pen.clear()
            pen.write('Computer picked {}, you lost.'.format(r.title()), align="center", font=("Courier", 24))
        else:
            pen.clear()
            pen.write('Computer picked {}, you win.'.format(p.title()), align="center", font=("Courier", 24))

我正在尝试在乌龟中创建剪刀石头布游戏。玩家在电脑前玩游戏，他需要通过按“ r”，“ p”或“ s”来捡石头或剪刀。我在链接键时发现问题...

Answer 1

在onkeypress中，您需要指定功能名称。您已包括括号，因此您正在calling

Answer 2

与scissorsfn()相对于scissorsfn的第一个参数的问题无关，此代码将不起作用。 wn.onkeypress()始终返回wn.onkeypress()，因此永远不会执行此代码：