day3-homework

• 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