Python输入输出练习,运算练习,turtle初步练习

1.Hello World!

print('hello world!'

2.简单交互

name=input('输入姓名:')
print('{}好'.format(name))
print('{}好'.format(name[0]))
print('{}好'.format(name[1:]))

 

3.用户输入两个数字,计算并输出两个数字之和

print(float(input('第1个数:'))+float(input('第2个数:')))

4。用户输入三角形三边长度,并计算三角形的面积:(海伦公式)

a=float(input('第一条边长:'))
b=float(input('第2条边长:'))
c=float(input('第3条边长:'))
p=(a+b+c)/2
s=(p*(p-a)*(p-b)*(p-c))**0.5
print(s)

5.输入半径,计算圆的面积

 

r=float(input('半径:'))
s=3.14*r*r
print('面积是:',s)

6.画一组同切圆

import turtle
turtle.circle(10)
turtle.circle(20)
turtle.circle(40)
turtle.circle(80)

7.画一个五角星

import turtle
turtle.forward(300)
turtle.left(144)
turtle.forward(300)
turtle.left(144)
turtle.forward(300)
turtle.left(144)
turtle.forward(300)
turtle.left(144)
turtle.forward(300)

 

8.画一个全黄色的五角星

import turtle
turtle.color('yellow')
turtle.begin_fill()
turtle.fillcolor('yellow')
turtle.forward(300)
turtle.left(144)
turtle.forward(300)
turtle.left(144)
turtle.forward(300)
turtle.left(144)
turtle.forward(300)
turtle.left(144)
turtle.forward(300)
turtle.end_fill()

 9.同心圆

import turtle
turtle.penup()
turtle.goto(0,-200)
turtle.pendown()
turtle.circle(200)
turtle.penup()
turtle.goto(0,-150)
turtle.pendown()
turtle.circle(150)
turtle.penup()
turtle.goto(0,-100)
turtle.pendown()
turtle.circle(100)
turtle.penup()
turtle.goto(0,-50)
turtle.pendown()
turtle.circle(50)

 10.国旗

import turtle
turtle.bgcolor('red')
turtle.color('yellow')
turtle.begin_fill()
turtle.fillcolor('yellow')
turtle.penup() 
turtle.goto(-310,200)
turtle.pendown()
for i in range(5):
  turtle.forward(150)
  turtle.right(144)
turtle.end_fill()
turtle.penup()
turtle.goto(-150,250)
turtle.pendown()
turtle.begin_fill()
for i in range(5):
       turtle.forward(40)
       turtle.right(144)
turtle.end_fill()
turtle.penup()
turtle.goto(-100,200)
turtle.pendown()
turtle.begin_fill()
for i in range(5):
       turtle.forward(40)
       turtle.right(144)
turtle.end_fill()
turtle.penup()
turtle.goto(-110,130)
turtle.pendown()
turtle.begin_fill()
for i in range(5):
       turtle.forward(40)
       turtle.right(144)
turtle.end_fill()
turtle.penup()
turtle.goto(-160,70)
turtle.pendown()
turtle.begin_fill()
for i in range(5):
       turtle.forward(40)
       turtle.right(144)
turtle.end_fill()

 

posted on 2017-09-07 11:40  yezless  阅读(202)  评论(0编辑  收藏  举报