Python基础综合练习

import turtle

turtle.setup(600, 400, 0, 0)
turtle.color('yellow')
turtle.bgcolor('red')
turtle.fillcolor('yellow')

turtle.speed(10)
def mygoto(x,y):
    turtle.up()
    turtle.goto(x,y)
    turtle.down()

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

mygoto(-220,75)
write(100)

for n in range(4):
    x=1
    if n in [0,3]:
        x=0
    mygoto(-100+x*50,150-n*60)
    turtle.right(15-n*15)
    write(30)

turtle.done()

取得校园新闻的编号：

str = "http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html"

print (str[-9:-5])

产生python文档的网址：

str = "https://docs.python.org/3/library/turtle.html";
print(str.replace("turtle", "test"))

产生校园新闻的一系列新闻页网址：

for i in range[2,299]:
    print("http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html".format(i))