python作业--字符串操作练习

实例：输出12个星座符号，以反斜线分隔。

实例：恺撒密码的编码

输入姓名，格式输出：占4位、居中、不足4字的以空格填充。

格式化输出：中华人民共和国国内生产总值(GDP)689,136.89亿元(2015年)（千分位、2位小数，浮点数）

实例：打出99乘法表

实例: 下载一首英文的歌词或文章，统计单词出现的次数，将所有,.？！替换为空格，将所有大写转换为小写。

用webbrowser，uweb.open_new_tab('url')打开校园新闻列表

 

for i in range(12):
    print(chr(9800+i),end="\\")

 

key=int(input("输入密钥："))
s=input("input:")
for i in s: 
　　if 97 <= ord(i) <= 122:
　　　　print(chr(97+ (ord(i) - 97)+ 3) % 26）)
　 else: 
　　　　print(chr(ord(i)+key))

 

name=input(":")
print("{0: ^4}".format(name))

 

s=float(input("money: "))
print("中华人民共和国国内生产总值（GDP）为：{0:,.2f}亿元(2015)".format(s))

 

for i in range(1,10):
    for j in range(1,i+1):
        print("{}*{}={}".format(i,j,i*j),end="\t")
    print(end="\n")

 

song='''"spend all your time waiting for that second chance
for the break that will make it ok
there's always some reason to feel not good enough
and it's hard at the end of the day
i need some distraction or a beautiful release
memories seep from my veins
let me be empty or weightless and maybe
l'll find some peace tonight
in the arms of the angel far away from here
from this dark cold hotel room and the endlessness that you feel
you are pulled from the wreckage of your silent reverie
you are in the arms of the angel, may you find some comfort here
so tired of the straight line and everywhere you turn
there's vultures and thieves at your back
the storm keeps on twisting, you keep on building the lies
that make up for all that you lack
it don't make no difference, escape one last time
it's easier to believe
in this sweet madness oh this glorious sadness
that brings me to my knees
in the arms of the angel far away from here
from this dark, cold hotel room and the endlessness that you feel
you are pulled from the wreckage of your silent reverie
in the arms of the angel ,may you find some comfort here
in the arms of the angel, may you find some comfort here"'''

print(song.lower())
for i in range(0,26):
    print("{0}:{1}".format(chr(97+i),song.count(chr(97+i))))
s=input("输入单词")
print(song.count(s))

 

import webbrowser
webbrowser.open_new_tab('www.baidu.com')