python教孩子学编程 教孩子学编程(Python语言版)

教孩子学编程(Python语言版)

第1 章 Python 基础：认识环境

#NiceHexSpiral.py

#运行后，挺奇特，整个作画过程，完全呈现。

import turtle

colors=["red","purple","blue","green","yellow","orange"]

t=turtle.Pen()

turtle.bgcolor("black")

for x in range(360):

t.pencolor(colors[x%6])

t.width(x/100+1)

t.forward(x)

t.left(59)#59度由来，60度画出正六边形，因要旋转，故小于60度

#YourName.py

name=input("What's your name?\n")

print("Hi, ",name)

第2 章 海龟作图：用Python 绘图

#SquareSpiral1.py -5-16

import turtle

t=turtle.Pen()

for x in range(100):

t.forward(x)

t.left(90)

#SquareSpiral2.py -5-16

import turtle

t=turtle.Pen()

for x in range(100):

t.forward(x)

t.left(91)

#CircleSpiral1.py -5-16

import turtle

t=turtle.Pen()

for x in range(100):

t.circle(x)

t.left(91)

#SquareSpiral3.py -5-16

import turtle

t=turtle.Pen()

t.pencolor("red")#此处写成t.pencolor="red"

for x in range(100):

t.forward(x)

t.left(91)

第3 章 数字和变量：用Python 做数学运算