条件、循环、函数定义、字符串操作练习

1.用循环画五角星

import turtle
turtle.color("red")
turtle.fillcolor("red")
turtle.begin_fill()
for i in range(5):
     turtle.forward(200)
     turtle.right(144)
turtle.end_fill()

 

2.用循环画同心圆

import turtle

    for i in range(5):

    turtle.up()

    turtle.goto(0,-10*(i+1))

    turtle.down()

    turtle.circle(10*(i+1))

 

3.用while循环画太阳花

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

 

4.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 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)

 

5.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()

6.输入学号，识别年级、专业、序号

sid=input("学号:")

g=sid[2:4]
p=sid[4:8]
t=sid[-2:]
print("年级：{}级".format(g))
if p=="0611":
  print("专业：网络工程")
print("序号：{}".format(t))

7.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"
t=int(input("1-7:"))
print(s[3*(t-1):3*t])

8.识别身份证号中的省市区、年龄、性别

id=input("身份证号：")
s=id[0:5]
q=id[14:17]
t=id[6:10]
if s=="440682":
  print("地区：佛山")
if int(q)%2==0:
   print("女")
else:
   print("男")
a=2017-int(t)
print("年龄：{}".format(a))

9.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)

s="https://docs.python.org/3.6/library/index"
t=".html"
add=s+t
print(add)