Python学习日志 - 2.变量和简单数据类型（习题解答）

2-1简单消息

msg = "this is a message"
print(msg)

2-2多条简单消息

msg = "this is a message"
print(msg)
msg = "this is another message"
print(msg)

2-3个性化消息

username = input()
msg = "Hello {{name}}, would you like to learn some Python today?"
msg = msg.replace("{{name}}", username)
print(msg)

2-4调整名字的大小写

name = "bill gates"
print(name.upper())
print(name.lower())
print(name.title())

2-5名言

msg = 'William Shakespeare once said, "to be or not to be, that's a question."'  
print(msg) 

2-6名言2

name = "William Shakespeare"
msg = '{{name}} once said, "to be or not to be, that's a question."'
msg = msg.replace("{{name}}", name)
print(msg)

2-7剔除人名中的空白

name = "\r\n Bill Gates\t\r\n"
print(name)
print(name.strip())
print(name.lstrip())
print(name.rstrip())

2-8数字8

print(1 + 7)
print(9 - 1)
print(2 * 4)
print(int(16 / 2))

2-9最喜欢的数字

number = 65536  
msg = "My favorite number is " + str(number)  
print(msg)  

2-10添加注释

username = input()
# I think it is better to build a combined string by using replace
msg = "Hello {{name}}, would you like to learn some Python today?"
msg = msg.replace("{{name}}", username)
print(msg)

2-11Python之禅

>>>import this
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!