为 python 个形状着色

Question

我试图让这个人偶在整个过程中改变颜色，但我不确定我做错了什么。只画黑线，代码如下：

import turtle

colors = ["blue", "red", "yellow", "pink"]
NUM_LINES = 100

turtle.hideturtle()
turtle.speed(0)
colors = ["blue", "red", "yellow", "pink"]

for x in range(NUM_LINES):
  color = colors[x%4]
  turtle.left(90)
  turtle.forward(2+(4*x))

  for color in ['red', 'blue', 'brown', 'black']:

        turtle.pencolor(color)

Answer 1

您的内循环将笔颜色从红色更改为蓝色、棕色、黑色，然后然后进入外循环的下一个线条绘制步骤。所以只画黑线。您的 color = colors[x%4] 逻辑没问题，所以改用它：

for x in range(NUM_LINES):
  color = colors[x%4]
  turtle.pencolor(color)
  turtle.left(90)
  turtle.forward(2+(4*x))

Answer 2

或者做下面的，换一种颜色：

for x in range(NUM_LINES):
  color = colors[x//25]
  turtle.left(90)
  turtle.forward(2+(4*x))
  turtle.pencolor(color)

import turtle

colors = ["blue", "red", "yellow", "pink"]
NUM_LINES = 100

turtle.hideturtle()
turtle.speed(0)
colors = ["blue", "red", "yellow", "pink"]


for x in range(NUM_LINES):
  color = colors[x//25]
  turtle.left(90)
  turtle.forward(2+(4*x))
  turtle.pencolor(color)

输出过程结束：

为 python 个形状着色

Coloring python shapes

python

turtle-graphics