如何测试由Random.randint在Python Turtle中产生的特定RGB值？

Question

我想在turtle.screen（）上写一条提示消息，每当乌龟击中边框时会生成随机颜色时，会生成柠檬绿色（50，205，50）< /代码>。

import random
import turtle
import math

turtle.colormode(255)

# random color generator
r = random.randint(0, 255)
g = random.randint(0, 255)
b - random.randint(0, 255)
rand_color = turtle.color(r, g, b)

# it will update the rgb values set above everytime a condition is satisfied
def rand_c():
    return rand_color

# for the prompt message inside turtle.Screen()
sm = turtle.Turtle()
sm.color("White")
sm.hideturtle()
sm.goto(0, 0)

# game loop
while True:
    player.forward(speed)

    # boundary checking/ putting effects on the border/ player
    if player.xcor() > 275 or player.xcor() < -275:
        player.setposition(x=0, y=0)  # player positioned to (0, 0) when it hits L and R border
        winsound.PlaySound("KABOOM", winsound.SND_ASYNC)  # plays sound when border is hit
        score *= 0  # multiplies the score to zero if the player hits border
        rand_c()  # change the player color every time it hits the left and right border

    # What should be the code here? (condition statement for when turtle generates a lime green color)

        if rand_color == (50, 205, 50):
            sm.write("Stealth Mode", align="center", font=("Courirer new", 10, "bold"))
            sleep(2)
            sm.clear()

        else:
            pass

问题在于，它每次撞到边框时都会写下提示消息，而不仅仅是乌龟只能随机生成柠檬绿色（50，205，50）时写提示消息。

Answer 1

如果您想要生成新的颜色，则必须这样做。

# random color generator

def rand_c():
    r = random.randint(0, 255)
    g = random.randint(0, 255)
    b = random.randint(0, 255)
    turtle.color( (r,g,b) )
    return r, g, b

rand_color = rand_c()

在您的循环中：

        rand_color = rand_c()

        if rand_color == (50, 205, 50):

Answer 2

您可以将随机颜色存储在全局a @timroberts中，也可以询问乌龟的当前颜色，即pencolor（）。但是，还有许多其他问题可以使您的代码无法正常工作。

首先，一个负号，您的意思是一个等于标志：

g = random.randint(0, 255)
b - random.randint(0, 255)

的方法中分配结果：

rand_color = turtle.color(r, g, b)

或者，可以：

turtle.color(r, g, b)
rand_color = turtle.pencolor()

或：：：：：：：：：：：：：：：：：：：：

rand_color = (r, g, b)
turtle.color(rand_color)

接下来，您是从没有返回任何内容

from turtle import Screen, Turtle
from random import randrange
from time import sleep

# random color generator
# it will update the rgb values set above every time a condition is satisfied
def rand_c():
    r = randrange(256)
    g = randrange(256)
    b = randrange(256)
    rand_color = (r, g, b)

    player.color(rand_color)

screen = Screen()
screen.colormode(255)

player = Turtle()

# for the prompt message inside turtle.Screen()
prompt = Turtle()
prompt.hideturtle()

while True:
    player.forward(player.speed())

    # boundary checking/ putting effects on the border/ player
    if not -275 <= player.xcor() <= 275:
        player.home()  # player positioned to (0, 0) when it hits L and R border
        # winsound.PlaySound("KABOOM", winsound.SND_ASYNC)  # plays sound when border is hit
        score = 0  # sets the score to zero if the player hits border
        rand_c()  # change the player color every time it hits the left and right border

        if player.pencolor() == (50, 205, 50):
            prompt.write("Stealth Mode", align='center', font=('Courirer new', 10, 'bold'))
            sleep(2)
            prompt.clear()

screen.mainloop()  # never reached