python turtle 各种示例

 

pensize() 函数的示例

import turtle
step=100
turtle.penup()
turtle.setposition(-400, 0)
turtle.pendown()
turtle.speed(1)
turtle.write(0.001)
turtle.pensize(0.001)
turtle.forward(step)
turtle.write(0.01)
turtle.pensize(0.01)
turtle.forward(step)
turtle.write(0.01)
turtle.pensize(0.1)
turtle.forward(step)
turtle.write(1)
turtle.pensize(1)
turtle.forward(step)
turtle.write(10)
turtle.pensize(10)
turtle.forward(step)
turtle.write(100)
turtle.pensize(100)
turtle.forward(step)
#turtle.write(1000)
#turtle.pensize(1000)
#turtle.forward(step)
turtle.done()

 

 可以看出最小是1像素，最大不限制。

 

turtle 可以用的全部颜色（所有颜色）

 

 

 

 

matplotlib 颜色名称

"""
========================
Visualizing named colors
========================

Simple plot example with the named colors and its visual representation.
"""
from __future__ import division

import matplotlib.pyplot as plt
from matplotlib import colors as mcolors


colors = dict(mcolors.BASE_COLORS, **mcolors.CSS4_COLORS)

# Sort colors by hue, saturation, value and name.
by_hsv = sorted((tuple(mcolors.rgb_to_hsv(mcolors.to_rgba(color)[:3])), name)
                for name, color in colors.items())
sorted_names = [name for hsv, name in by_hsv]

n = len(sorted_names)
ncols = 4
nrows = n // ncols + 1

fig, ax = plt.subplots(figsize=(8, 5))

# Get height and width
X, Y = fig.get_dpi() * fig.get_size_inches()
h = Y / (nrows + 1)
w = X / ncols

for i, name in enumerate(sorted_names):
    col = i % ncols
    row = i // ncols
    y = Y - (row * h) - h

    xi_line = w * (col + 0.05)
    xf_line = w * (col + 0.25)
    xi_text = w * (col + 0.3)

    ax.text(xi_text, y, name, fontsize=(h * 0.8),
            horizontalalignment='left',
            verticalalignment='center')

    ax.hlines(y + h * 0.1, xi_line, xf_line,
              color=colors[name], linewidth=(h * 0.6))

ax.set_xlim(0, X)
ax.set_ylim(0, Y)
ax.set_axis_off()

fig.subplots_adjust(left=0, right=1,
                    top=1, bottom=0,
                    hspace=0, wspace=0)
plt.show()

 

画图速度 turtle.speed()

import turtle
step=200
turtle.penup()
turtle.setposition(-400, 0)
turtle.pendown()

turtle.speed(1)
turtle.forward(step)
turtle.speed(5)
turtle.forward(step)
turtle.speed(10)
turtle.forward(step)
turtle.speed(100)
turtle.forward(step)
turtle.speed(0)
turtle.forward(step)
turtle.done()

 

五星红旗，五角星

import turtle

turtle.setup(600,400,0,0)
turtle.bgcolor("red")
turtle.fillcolor("yellow")
turtle.color('yellow')
turtle.speed(10)
#主星
turtle.begin_fill()
turtle.up()
turtle.goto(-280,100)
turtle.down()
for i in range (5):
    turtle.forward(150)
    turtle.right(144)
turtle.end_fill()
#第1颗副星
turtle.begin_fill()
turtle.up()
turtle.goto(-100,180)
turtle.setheading(305)
turtle.down()
for i in range (5):
    turtle.forward(50)
    turtle.left(144)
turtle.end_fill()
#第2颗副星
turtle.begin_fill()
turtle.up()
turtle.goto(-50,110)
turtle.setheading(30)
turtle.down()
for i in range (5):
    turtle.forward(50)
    turtle.right(144)
turtle.end_fill()
#第3颗副星
turtle.begin_fill()
turtle.up()
turtle.goto(-40,50)
turtle.setheading(5)
turtle.down()
for i in range (5):
    turtle.forward(50)
    turtle.right(144)
turtle.end_fill()
#第4颗副星
turtle.begin_fill()
turtle.up()
turtle.goto(-100,10)
turtle.setheading(300)
turtle.down()
for i in range (5):
    turtle.forward(50)
    turtle.left(144)
turtle.end_fill()
turtle.done()