Python的基础综合练习

Pycharm开发环境设置与熟悉。

练习基本输入输出：

print('你好,{}.'.format(name))

print(sys.argv)

库的使用方法：

import ...

from ... import ...

条件语句：

if (abs(pos()))<1:

break

循环语句：

for i in range(5):

while True:

函数定义：

def mygoto(x,y):

def drawjx(r):

综合练习：画一面五星红旗，将代码与运行截图发布博客交作业。

import turtle
 
def goto(x,y):
    turtle.up();
    turtle.goto(x,y);
    turtle.down;
 
def drawxwjx(x):
    turtle.begin_fill()
    for i in range(5):
        turtle.forward(x)
        turtle.right(144)
    turtle.end_fill()
 
turtle.setup(600,400,0,0)
turtle.color("yellow")
turtle.bgcolor("red")
 
goto(-260,120)
turtle.begin_fill()
for i in range(5):
    turtle.forward(100)
    turtle.right(144)
turtle.end_fill()
 
for i in range(4):
    x = 1
    if i in [0,3]:
        x = 0
    goto(-120+x*45,180-i*45)
    turtle.left(15-i*15)
    drawxwjx(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

str='http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html'
print(str[-9:-5])

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

产生python文档的网址

addr1 = 'https://docs.python.org/3/library/'
addr2 = '.html'
addr = addr1 + 'turtle' +  addr2
print(addr)

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(2,10):
    print('http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html'.format(str(i)));

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

用函数得到校园新闻编号

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

用函数统计一歌词中单词出现的次数

str='''
You were the shadow to my light
你是我生命之光中的一道暗影
Did you feel us
你能理解我们吗
Another Star
另一颗行星
You fade away
你逐渐消失
Afraid our aim is out of sight
恐惧我们的目标迷失在视野
Wanna see us
希望我们互相理解
Alive
活着
Where are you now
你身在何方?
Where are you now
你身在何方?
Where are you now
你身在何方?
Was it all in my fantasy
难道这一切都在我的幻想里
Where are you now
你身在何方?
Were you only imaginary
你只是虚幻的不存在吗?
Where are you now
你身在何方?
Atlantis
亚特兰蒂斯
Under the sea
在海底
Under the sea
在海底
Where are you now
你身在何方?
Another dream
另外的梦想
The monster's running wild inside of me
狂野的怪兽驰聘在我心深处
I'm faded
我憔悴不堪
I'm faded
我憔悴不堪
So lost, I'm faded
所以迷失，憔悴不堪
I'm faded ~~~
我憔悴不堪
So lost, I'm faded
所以迷失，憔悴不堪
These shallow waters never met
那些从未见过的水中之影
What i needed
我需要的
I'm letting go
只是顺其自然
A deeper dive
深沉海底
Eternal silence of the sea
无尽的沉默于海中
I'm breathing
我的呼吸声
Alive.
活着
Where are you now
你身在何方?
Where are you now
你身在何方?
Under the bright but faded lights
明亮的灯光却已经黯然失色
You set my heart on fire
你点燃了我的心火
Where are you now
你身在何方?
Where are you now
你身在何方?
...
...
Where are you now
你身在何方?
Atlantis
亚特兰蒂斯
Under the sea
在海底
Under the sea
在海底
Where are you now
你身在何方?
Another dream
另外的梦想
The monster's running wild inside of me
狂野的怪兽驰聘在我心深处
I'm faded
我憔悴不堪
I'm faded
我憔悴不堪
So lost, I'm faded
所以迷失，憔悴不堪
I'm faded ~~~
我憔悴不堪
So lost, I'm faded
所以迷失，憔悴不堪
'''
print(str.count("you"))
print(str.replace(","," "))