代码改变世界

条件、循环、函数定义、字符串操作练习

2017-09-14 18:44  421徐均钧  阅读(203)  评论(0编辑  收藏  举报

用循环画五角星

import turtle
turtle.begin_fill()
for i in range(5):
        turtle.forward(100)
        turtle.right(144)
turtle.end_fill()

用循环语句画同心圆

from turtle import*

for i in range(5):
    up()
    goto(0,-20*i)
    down()
    circle(20*i)

用while循环画太阳花

from turtle import *
color('orange','yellow')
begin_fill()
while True:
    forward(200)
    left(170)
    if(abs(pos()))<1:
     break
end_fill()
done()

函数定义画五个五角星

import turtle
turtle.setup(600,400,0,0)
turtle.color("yellow")
turtle.bgcolor('red')
turtle.fillcolor("yellow")
 
def xy(x,y):
    turtle.up()
    turtle.goto(x,y)
    turtle.down()
 
def draw(r):
    turtle.begin_fill()
    for i in range(5):
        turtle.forward(r)
        turtle.right(144)
    turtle.end_fill()
 
xy(-273,110)
draw(100)
 
xy(-121,162)
turtle.left(45)
draw(50)
 
xy(-79,110)
draw(50)
 
xy(-79,51)
turtle.right(45)
draw(50)
 
xy(-121,22)
turtle.right(45)
draw(50)

用函数定义画钻石花瓣的太阳花

import turtle
 
def draw_diamond(brad):
    brad.forward(120)
    brad.right(45)
    brad.forward(120)
    brad.right(135)
 
def draw_art():
    window=turtle.Screen()
    window.bgcolor("pink")
    brad=turtle.Turtle()
    brad.shape("turtle")
    brad.color("red")
 
    for i in range(1,13):
        draw_diamond(brad)
        draw_diamond(brad)
        brad.left(30)
 
    window.exitonclick()
 
draw_art()

  

字符串操作

.输入学号,识别年级、专业、序号

professions = {
      1144:'网络工程',
      1143:'网络工程',
      1142:'软件工程',
      1141:'数字媒体',
      }
   
def distinguish(studentID):
    if len(studentID)<12:
        print("请输入正确的学号!")
    elif studentID.isdigit() != True:
        print("请输入正确的学号!")
    else:
        grade = studentID[0:4]
        profession = studentID[6:10]
        num = studentID[10:12]
        print("年级: {}级".format(grade))
        print("专业:",professions.get(int(profession)))
        print("序号:  {}号".format(num))
  
studentID = input("请输入学号:")
distinguish(studentID)

输入1-7的数字,输出对应的“星期几”

s="星期一星期二星期三星期四星期五星期六星期天"
i=int(input("请输入(1-7):"))
if(0<i<8):
    print(s[-3+3*i:0+3*i])
else:
    print("输入有误!")

识别身份证号中的省市区、年龄、性别

ID=input('请输入十八位身份证号码: ')
if len(ID)!=18:
  print("错误的身份证号码!!")
   
ID_add=ID[0:6]
ID_birth=ID[6:10]
ID_sex=ID[14:17]
 
if int(ID_add)==440101:
  print("省市区:广东省广州市市辖区")
elif int(ID_add)==440102:
    print("省市区:广东省广州市东山区")
elif int(ID_add)==440103:
    print("省市区:广东省广州市荔湾区")
elif int(ID_add)==440104:
    print("省市区:广东省广州市越秀区")
elif int(ID_add)==440105:
    print("省市区:广东省广州市海珠区")
 
     
birth=2017-int(ID_birth[0:4])
print("年龄:{}".format(birth))
   
if int(ID_sex)%2==0:
  print('性别:女')
else:
  print('性别:男')

用字符串操作生成python文档各库的网址(起始网址在这里https://docs.python.org/3.6/library/index.html)

 

练习字符串的+,*,in,len(),eval()