Python 基础综合练习

import turtle

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

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

turtle.color("red")
turtle.speed(10)
mygoto(-300,200)
turtle.begin_fill()
for i in range(2):
    turtle.forward(576)
    turtle.right(90)
    turtle.forward(384)
    turtle.right(90)
turtle.end_fill()

turtle.color("yellow")
mygoto(-262,123)
drawwjx(110)

for i in range(4):
    x=1
    if i in [0,3]:
        x=0
    mygoto(-120+x*30, 160-i*41)
    turtle.left(15-i*15)
    drawwjx(30)

turtle.hideturtle()
turtle.done()

　　

字符串练习：

http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html

取得校园新闻的编号

url ="http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html"
print(url[-14:-5])

　

https://docs.python.org/3/library/turtle.html

产生python文档的网址

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

　

http://news.gzcc.cn/html/xiaoyuanxinwen/4.html

产生校园新闻的一系列新闻页网址

for i in range(0,5):
    print('http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html'.format(i))

　

练习字符串内建函数：strip,lstrip,rstrip,split,count，replace

用函数得到校园新闻编号

url ="http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html"
print (url.split('_',2)[1].rstrip(".html"))

　用函数统计一歌词(文章、小说)中单词出现的次数，替换标点符号为空格，用空格进行分词。

str = '''I have a small bedroom. 
There is a bed on the right corner of the room. 
There is a desk and a chair beside the bed. 
There is a computer and a lamp on the desk. 
There is a bookshelf between the bed and the desk. 
There are thousands of books on the bookshelf. 
Although my bedroom is small, it's always clean and tidy. 
So I like my bedroom very much.'''
print(str.count("There"))
print(str.replace(","," "))
print(str.split())