Python基础综合练习

import turtle
from turtle import *


def mygoto1(x, y):
    turtle.up()
    turtle.goto(x, y)
    turtle.down()


def star(r):
    turtle.begin_fill()
    for i in range(5):
        turtle.forward(r)
        turtle.right(144)
    turtle.end_fill()


turtle.setup(700, 500)
turtle.bgcolor('red')
turtle.color('yellow')
turtle.speed(8)
turtle.fillcolor('yellow')
turtle.hideturtle()


mygoto1(-300, 150)
star(100)
mygoto1(-190, 220)
star(45)
mygoto1(-140, 150)
star(45)
mygoto1(-140, 90)
star(45)
mygoto1(-190, 40)
star(45)
done()

产生校园新闻的一系列新闻页网址

str1 = 'http://news.gzcc.cn/html/xiaoyuanxinwen/'
str2 = '.html'

for i in range(1,10):
    str3 = str1 + str(i) + str2
    print(str3)

取得校园新闻的编号

str1 = 'http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html'

print(str1[-14:-5])


字符串內建函数

str1 = 'http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html'
a = '    this is string example....wow!!!   '
print(a.lstrip())
print(a.strip())
print(a.lstrip().lstrip('this'))
print(str1.rstrip('.html'))
print(str1.rstrip('.html')[-9:-1])
print(a.split())
print(a.split('i'))

https://docs.python.org/3/library/turtle.html
产生python文档的网址

for i in range(2,,10):
    print('https://docs.python.org/3/library/{}.html'.format(i))