2-3 个性化消息: 将用户的姓名存到一个变量中，并向该用户显示一条消息。显示的消息应非常简单，如“Hello Eric, would you like to learn some Python today?”
name='Eric'
print('Hello %s , would you like to learn some Python today?'%(name))
Hello Eric , would you like to learn some Python today?
2-4 调整名字的大小写: 将一个人名存储到一个变量中，再以小写、大写和首字母大写的方式显示这个人名。
name='Eric'
name1=name.lower()
name2=name.upper()
name3=name2.capitalize()
print(name1,name2,name3)
eric ERIC Eric
2-5 名言: 找一句你钦佩的名人说的名言，将这个名人的姓名和他的名言打印出来。输出应类似于下面这样(包括引号):Albert Einstein once said, “A person who never made a mistake never tried anything new.”
name='Albert Einstein'
print('%s once said ,“A person who never made a mistake never tried anything new.”'%(name))
Albert Einstein once said ,“A person who never made a mistake never tried anything new.”
2-6 名言2: 重复练习2-5，但将名人的姓名存储在变量famous_person 中，再创建要显示的消息，并将其存储在变量message 中，然后打印这条消息。
famous_person='Albert Einstein'
message=' once said ,“A person who never made a mistake never tried anything new.”'
print(famous_person+message)
Albert Einstein once said ,“A person who never made a mistake never tried anything new.”
2-7剔除人名中的空白: 存储一个人名，并在其开头和末尾都包含一些空白字符。务必至少使用字符组合"\t" 和"\n" 各一次。 打印这个人名，以显示其开头和末尾的空白。然后，分别使用剔除函数lstrip() 、rstrip() 和strip() 对人名进行处理，并将结果打印出来。
name='-- \t成龙\n --'
print(name)
new_name1=name.rstrip('\n''-'' ')
print(new_name1)
new_name2=new_name1.lstrip('\t''-'' ')
print(new_name2)
print(name.strip('\n''\t''-'' '))
-- 成龙
--
-- 成龙
成龙
成龙
