罗马非一日建成

# chapter4: dictionaries # Question: why can not use dict function to init seq like dict(seq) # dicts have no order #1 init dict={'lili':'01','lucy':'02'} print dict['lili'] #2 basic dictionay o

chapter 9：Magic Methods, Properties, and Iterators 1 new-type class & old-type class 参考：http://ebkk.blog.163.com/blog/static/194135085200972692621216/ 从python 2.2 起，如果一个类继承自object 对象(或者它是任何内建类型

第一章：python基础   1 运算符   >>1+2*3 >>7   整除 >>1/2 >>0   浮点数除,任何一方浮点即可 >>1/2.0 >>0.5   取余 >>7%5 >>2   求幂 >>2**3 >>8   注意：幂结合度比负号大 >>-2**2 >>-4   扩充：__future__用于导入python未来支持的语言特征

Git的一些常用的撤销提交版本的的命令： git revert HEAD                  撤销前一次 commit git revert HEAD^               撤销前前一次 commit git revert commit （比如：fa042ce57ebbe5bb9c8db709f719cec2c58ee7ff）撤销指定的版本，撤销也会作为一次提交进行

#Chapter10:Batteries included # Question :regular expression #1 simple example about module import sys sys.path.append('E:\pycode') import hello         #excute hello.py and a new file appears (h

#Chapter8:Exceptions #Question：Warning? #1 The raise statement # raise Exception('test') import exceptions print dir(exceptions) # built-in exceptions in the module exceptions(as well as in the b

#Chapter5:more abstraction #1 The magic of objects # polymorphism means having multiple forms. # encapsulation # inheritance #2 making your own classes class Person:     def setName(self,name):

#Chapter5:abstraction #1 Creating Your Own Functions # -1.1- Documenting Functions def hello(name):     'this is comments' #docstring:comment of this fuc, can be show using .__doc__     'this is

#Chapter5:conditinals,loops,and some other statements # Questions:about namespace with exec #1 more about print & import # -1.1- print print 'hello', \       'world' #same with print 'hello', p

------------chapter2: ----------1 six built-in types of sequences list tuples strings unicode strings buffer objects xrange objects ----------2 list VS tuples list can be changed tuples can

------------chapter3: Strings ----------basic string operations all sequences' operations ; but cannot be changed ----------string formatting:the short version --------generic formatting Note:If

1 Fibonacci 斐波那契序列 & callable() & __doc__ & help() #note:如果使用raw_input,则返回的是plain string,需要进行int转换 def fib(): num = input('how many numbers you want to get? ') fibs = [0,1] for i in range