- 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?”。
username = 'ranzhao'
print("Hello "+username+", would you like to learn some Python today?")
print("Hello %s, would you like to learn some Python today?" % username)
result:
Hello ranzhao, would you like to learn some Python today?
Hello ranzhao, 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。
username = 'lucian'
# 首字母大写显示
print(username.capitalize())
# 小写显示
print(username.lower())
# 大写显示
print(username.upper())
result:
Lucian
lucian
LUCIAN
- 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.”
# this sentence is created by rzlong
print('Rzlong said,"Don\'t hesitate! Just do it now."')
result:
Rzlong said,"Don't hesitate! Just do it now."
- 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 = "Rzlong"
message = 'Rzlong said,"Don\'t hesitate! Just do it now."'
print(message)
result:
Rzlong said,"Don't hesitate! Just do it now."
- 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。
badname = '*****S\thiting\n King*****'
badname2 = ' S\thiting\n King '
print(badname)
print('------------------------')
# lstrip()函数,剔除字符串左边的空白，也可以括号里带参数(剔除对应的字符)
print(badname.lstrip('*'))
# rstrip()函数剔除字符串右边的空白，也可以括号里带参数(剔除对应的字符)
print(badname.rstrip('*'))
# strip()函数剔除字符串两边的空白，也可以括号里带参数(剔除对应的字符)
print(badname.strip('*'))
print('------------------------')
print(badname2.lstrip())
print(badname2.rstrip())
print(badname2.strip())
reslut:
*****S hiting
King*****
------------------------
S hiting
King*****
*****S hiting
King
S hiting
King
------------------------
S hiting
King
S hiting
King
S hiting
King
