第一周作业——书上习题

动手试一试
2-1 简单消息message=‘hello，python’
print（message）输出>>> message='hello,python'
>>> print(message)
hello,python2-2 多条简单消息message='hello'
print(message)
message="word!"
print(message) 输出>>> message='hello,world'
>>> print(message)
hello,world
>>> message="another word!"
>>> print(message)
another word!2-3 个性化消息name="xiaoming"
print(name,",let us learn python")输出>>> name="xiaoming"
>>> print(name,",let us learn python")
xiaoming ,let us learn python2-4 调整名字的大小写name='xiaoMing';
print('Name:',name);
print('Lower:',name.lower());
print('Upper:',name.upper());
print('Tittle:',name.title()); 输出>>> name='xiaoMing';
>>> print('Name:',name);
Name: xiaoMing
>>> print('Lower:',name.lower());
Lower: xiaoming
>>> print('Upper:',name.upper());
Upper: XIAOMING
>>> print('Tittle:',name.title());
Tittle: Xiaoming2-5 名言

name="Albert Einstein "
saying='"A person who never made a mistake never tried anything new."'
print(name,"once said, ",saying)

输出>>> name="Albert Einstein "
>>> saying='"A person who never made a mistake never tried anything new."'
>>> print(name,"once said, ",saying)
Albert Einstein once said, "A person who never made a mistake never tried anything new."2-6 名言2
name="Albert Einstein "
saying='“A person who never made a mistake never tried anything new.”'
message=name+"once said, "+saying
print(message)输出>>> name="Albert Einstein "
>>> saying='"A person who never made a mistake never tried anything new."'
>>> message=name+"once said, "+saying
>>> print(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name='\n\n\t\txiaoMing\t\t\n'
print("Name:\n",name)
print("Use lstrip():\n",name.lstrip())
print("Use rstrip():\n",name.rstrip())
print("Use strip():\n",name.strip()) 输出>>> name='\n\n\t\txiaoMing\t\t\n'
>>> print("Name:\n",name)
Name:

xiaoMing

>>> print("Use lstrip():\n",name.lstrip())
Use lstrip():
xiaoMing

>>> print("Use rstrip():\n",name.rstrip())
Use rstrip():

xiaoMing
>>> print("Use strip():\n",name.strip())
Use strip():
xiaoMing2-8 数字8print(5+3)
print(9-1)
print(4*2)
print(64/8)输出>>> print(5+3)
8
>>> print(9-1)
8
>>> print(4*2)
8
>>> print(64/8)
8.02-9 最喜欢的数字number="8"
print("my best like number is ",number)输出>>> number="8"
>>> print("my best like number is ",number)
my best like number is 82-10 添加注释#第一条python程序
print("hello world!")输出>>> #第一条python程序
... print("hello world!")
hello world!2-11 python之禅import this输出>>> 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!