个数 tle mat down inpu 一个 world class
- print(‘Hello world‘)
- Hello world
2
- name = input(‘请输入姓名:‘)
- print(‘%s 同学,你好‘%name)
- print(‘%s 同学,我觉得可以‘%name)
- print(‘%s 同学,那你很棒啊‘%name)
3
- num1 = input(‘请输入第一个数字:‘)
- 请输入第一个数字:5
- num2 = input(‘请输入第二个数字:‘)
- 请输入第二个数字:6
- sum = float(num1)+float(num2)
- print(float(sum))
- 11.0
4
- print(‘两数之和为 %.1f‘ %(float(input(‘输入第一个数字:‘))+float(input(‘输入第二个数字:‘))))
- 输入第一个数字:8
- 输入第二个数字:6
- 两数之和为 14.0
5
- a = float(input(‘输入三角形第一边长: ‘))
- b = float(input(‘输入三角形第二边长: ‘))
- c = float(input(‘输入三角形第三边长: ‘))
- s = (a + b + c) / 2
- area = (s*(s-a)*(s-b)*(s-c)) ** 0.5
- print(‘三角形面积为 %0.2f‘ %area)
6
- r = 10
- area = 3.1415 * r * r
- print(area)
- print("{:.2f}".format(area))
- 314.15000000000003
- 314.15
7
- import turtle
- turtle.pensize(3)
- turtle.circle(10)
- turtle.circle(30)
- turtle.circle(60)
- turtle.circle(90)
- turtle.circle(120)
8
- import turtle
- turtle.forward(100)
- turtle.left(144)
- turtle.forward(100)
- turtle.left(144)
- turtle.forward(100)
- turtle.left(144)
- turtle.forward(100)
- turtle.left(144)
- turtle.forward(100)
9
- from turtle import *
- fillcolor("yellow")
- begin_fill()
- while True:
- forward(200)
- right(144)
- if abs(pos())< 1:
- break
- end_fill()
10
- for i in range(4):
- turtle.pu()
- turtle.goto(0,-(i+1)*10)
- turtle.pd()
- turtle.circle((i+1)*10)
11
- import turtle
- turtle.penup()
- turtle.goto(-300,300)
- turtle.pendown()
- turtle.color("red")
- turtle.fillcolor("red")
- turtle.begin_fill()
- turtle.forward(500)
- turtle.right(90)
- turtle.forward(300)
- turtle.right(90)
- turtle.forward(500)
- turtle.right(90)
- turtle.forward(300)
- turtle.right(90)
- turtle.end_fill()
- turtle.penup()
- turtle.goto(-250,250)
- turtle.pendown()
- turtle.color("yellow")
- turtle.fillcolor("yellow")
- turtle.begin_fill()
- for i in range(5):
- turtle.forward(150)
- turtle.right(144)
- turtle.end_fill()
- turtle.penup()
- turtle.goto(-90,280)
- turtle.pendown()
- turtle.begin_fill()
- for i in range(5):
- turtle.forward(40)
- turtle.right(144)
- turtle.end_fill()
- turtle.penup()
- turtle.goto(-80,230)
- turtle.pendown()
- turtle.begin_fill()
- for i in range(5):
- turtle.forward(40)
- turtle.right(144)
- turtle.end_fill()
- turtle.penup()
- turtle.goto(-90,190)
- turtle.pendown()
- turtle.begin_fill()
- for i in range(5):
- turtle.forward(40)
- turtle.right(144)
- turtle.end_fill()
- turtle.penup()
- turtle.goto(-95,140)
- turtle.pendown()
- turtle.begin_fill()
- for i in range(5):
- turtle.forward(40)
- turtle.right(144)
- turtle.end_fill()
python练习9-7
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