条件、循环、函数定义、字符串操作练习
一、标准数据库两种导入方式
a.第一种
import turtle turtle.color("yellow") turtle.fillcolor("yellow") turtle.begin_fill() for i in range(5): turtle.forward(200) turtle.right(144) turtle.end_fill()
b.第二种
from turtle import* color("yellow") fillcolor("yellow") begin_fill() for i in range(5): forward(200) right(144) end_fill()
二、
a.循环语句画五角星
>>> import turtle >>> for i in range(5): turtle.forward(200) turtle.right(144)
b.循环语句画同心圆
>>> import turtle >>> for i in range(4): turtle.penup() turtle.goto(0,-50*i) turtle.pendown() turtle.circle(50*i)
c.while循环画太阳花
import turtle turtle.color('red','yellow') turtle.begin_fill() while True: turtle.forward(200) turtle.left(170) if abs(turtle.pos())<1: break turtle.end_fill() turtle.done()
d.用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 my_goto(x,y): turtle.up() turtle.goto(x,y) turtle.down() def my_draw5(r): turtle.begin_fill() for i in range(5): turtle.forward(r) turtle.right(144) turtle.end_fill() my_goto(-250,75) my_draw5(100) my_goto(-100,150) my_draw5(50) my_goto(-60,100) my_draw5(50) my_goto(-90,50) my_draw5(50) my_goto(-120,0) my_draw5(50)
e.用函数定义画钻石花瓣的太阳花
import turtle turtle.color("red") turtle.fillcolor("yellow") turtle.begin_fill() def draw(t): t.fd(80) t.right(45) t.fd(80) t.right(135) for i in range(36): draw(turtle) draw(turtle) turtle.left(10) turtle.end_fill()
三、字符串操作
a.输入学号,识别年级、专业、序号
id = input("请输入学生的学号:") print("该生年级为:%s 专业为:%s 班级学号为:%s"%(id[0:4],id[4:8],id[8:]))
b.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日" n =int(input("请输入数字(1-7):")) if (0 < n <8): print(s[((n-1)*3):(n*3)])
c.识别身份证号中的省市区、年龄、性别
mport time provinces = { 11:'北京市', 12:'天津市', 13:'河北省', 14:'山西省', 15:'内蒙古自治区', 21:'辽宁省', 22:'吉林省', 23:'黑龙江省', 31:'上海市', 32:'江苏省', 33:'浙江省', 34:'安徽省', 35:'福建省', 36:'江西省', 37:'山东省', 41:'河南省', 42:'湖北省', 43:'湖南省', 44:'广东省', 45:'广西壮族自治区', 46:'海南省', 50:'重庆市', 51:'四川省', 52:'贵州省', 53:'云南省', 54:'西藏自治区', 61:'陕西省', 62:'甘肃省', 63:'青海省', 64:'宁夏回族自治区', 65:'新疆维吾尔自治区', 71:'台湾省', 81:'香港特别行政区', 91:'澳门特别行政区' } def decide(cardID): province=cardID[0:2] birthdayYear=cardID[6:10] localYear=time.strftime('%Y') age=int(localYear)-int(birthdayYear) sex=cardID[16:17] print("省份为:", provinces.get(int(province))) print("年龄为:{}".format(age)) if int(sex)%2==0: print("性别:女") else: print("性别,男") cardID=input("请输入身份证号:") decide(cardID)
d.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)
a = "https://docs.python.org/3.6/library/" b = ".html" c = input("请输入库名:") print("网址为:%s%s%s"%(a,c,b))