字符串操作练习：星座凯撒密码99乘法表词频统计预处理
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- 1.实例：输出12个星座符号，以反斜线分隔。
for i in range(12): print(chr(9800+i),end=‘\\‘) - 2.实例：恺撒密码的编码
plaincode = input(‘明文：‘) print(‘密文:‘,end=‘‘) for i in plaincode: print(chr(ord(i)+3),end=‘‘) - 3.输入姓名，格式输出：占4位、居中、不足4字的以空格填充。
a=input("姓名：") print("你输入的名字是：{0:^4}".format(a)) - 4.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）
print("中华人民共和国国内生产总值(GDP):{0:^-10,.3f}亿元".format(689,136.89)) - 5.实例：打出99乘法表
for i in range(1,10): for j in range(1,10): print("%d*%d=%2d" % (i,j,i*j),end=" ") print("") - 6.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。
song=‘‘‘ Someone Like You - Adele I heard that you settled down 我听说你已心有所属 That you found a girl and your married now 你找到了一个合适的女孩并和她结了婚 I heard that your dreams came true 我听说你已梦想成真 Guess she gave you things I didn‘t give to you 我猜，她给了你我所未能给予的 Old friend why are you so shy 老朋友，你害什么羞呢 It ain‘t like you to hold back or hide from the lie 不像你啊，遮遮掩掩的 I hate to turn up out of the blue uninvited 我恨她代替了原本属于我的位置 But I couldn‘t stay away I couldn‘t fight it 但是我没办法离开，我无法释怀 I‘d hoped you‘d see my face & that you‘d be reminded 我曾多么希望你再看看我并提醒你 That for me it isn‘t over 并提醒你，对我来说，一切都还未结束 Nevermind I‘ll find someone like you 无所谓，我会找到一个人像你一样 I wish nothing but the best for you too 我别无所求，只希望你能过得好 Don‘t forget me I beg I remember you said - 求求你，不要忘记我我记得你说过 Sometimes it lasts in love but sometimes it hurts instead 有时爱情可以很永久但有时也会如此伤人 Sometimes it lasts in love but sometimes it hurts instead yeah 有时爱情可以很永久但有时也会如此伤人 是啊 You‘d know how the time flies 你知道时光飞逝 Only yesterday was the time of our lives 仿佛我们还在一起 We were born and raised in a summery haze 我的爱在夏日的烟雾中萌芽 Bound by the surprise of our glory days 充满着惊喜和喜悦 I hate to turn up out of the blue uninvited 我恨她代替了原本属于我的位置 But I couldn‘t stay away I couldn‘t fight it 但是我没办法离开，我无法释怀 I‘d hoped you‘d see my face & that you‘d be reminded 我曾多么希望你再看看我并提醒你 That for me it isn‘t over yet 对我来说，一切都还未结束 Nevermind I‘ll find someone like you 无所谓，我会找到一个人像你一样 I wish nothing but the best for you too 我别无所求，只希望你能过得好 Don‘t forget me I beg I remember you said - 求求你，不要忘记我我记得你说过 Sometimes it lasts in love but sometimes it hurts instead 有时爱情可以很永久但有时也会如此伤人 Nothing compares no worries or cares 没什么可与它相比不必担心 不必牵挂 Regret‘s and mistakes they‘re memories made 我们曾经的爱情里充满了遗憾和误解 Who would have known how bittersweet this would taste 又有谁能体会着中间的苦与甜 Nevermind I‘ll find someone like you 无所谓，我会找到一个人像你一样 I wish nothing but the best for you too 我别无所求，只希望你能过得好 Don‘t forget me I beg I remembered you said - 求求你，不要忘记我我记得你说过 Sometimes it lasts in love but sometimes it hurts instead 有时爱情可以很永久但有时也会如此伤人 Nevermind I‘ll find someone like you 无所谓，我会找到一个人像你一样 I wish nothing but the best for you too 我别无所求，只希望你能过得好 Don‘t forget me I beg I remembered you said - 求求你，不要忘记我我记得你说过 Sometimes it lasts in love but sometimes it hurts instead 有时爱情可以很永久但有时也会如此伤人 Sometimes it lasts in love but sometimes it hurts instead yeah yeah 有时爱情可以很永久但有时也会如此伤人 - ‘‘‘ print(song.count("someone")) print(song.replace(‘,‘,‘ ‘)) print(song.replace(‘.‘,‘ ‘)) print(song.replace(‘?‘,‘ ‘)) print(song.replace(‘!‘,‘ ‘)) print(song.lower()) - 7.用webbrowser，uweb.open_new_tab(‘url‘)打开校园新闻列表
import webbrowser as web for i in range(2,6): web.open_new_tab(‘http://news.gzcc.cn/html/xiaoyuanxinwen/‘+str(i)+‘.html‘)
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