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?”。
#################
# 2-3 个性化消息#
#################
name = 'Eric'
msg = 'Hello %s,would you like to learn some Python today?' % (name)
print(msg)
Output:
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。
#####################
# 2-4 调整名字大小写#
#####################
name = ['ALICE', 'Bob','crisp']
# 小写显示
name1 = name[0].lower()
print(name1)
# 大写显示
name2 = name[1].upper()
print(name2)
# 首字母大写
name3 = name[2].capitalize()
print(name3)
Output:
alice
BOB
Crisp
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.”
###########
# 2-5 名言#
###########
print('Hemingway once said, "A man can destroyed but not defeated ."')
Output:
Hemingway once said, "A man can destroyed but not defeated ."
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。
############
# 2-6 名言2#
############
famous_person = 'Hemingway'
motto = 'A man can destroyed but not defeated .'
message = '%s once said, \"%s\"' % (famous_person, motto)
print(message)
Output:
Hemingway once said, "A man can destroyed but not defeated ."
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。
################
# 2-7 剔除空白 #
################
another_name = ' \tAlbert \nEinstein '
print(another_name)
var1 = another_name.lstrip()
var2 = another_name.rstrip()
var3 = another_name.strip()
print('剔除开头空白%s:',var1,'\n剔除结尾空白%s:', var2, '\n剔除两端空白%s:', var3)
Output:
Albert
Einstein
剔除开头空白%s: Albert
Einstein
剔除结尾空白%s: Albert
Einstein
剔除两端空白%s: Albert
Einstein
