python~ Iteration

Dict	#默认情况下, the dict iteration is key	Iterate value	#迭代key, value
		For value in D.itervalues ():	For k,v in D.iteritems ():
#迭代字符串	For ch in ' ABCD123 ':
#判断是否是可迭代对象 Isinstance	String	List
From collections Import iterable	Isinstance (' abc ', iterable)	Isinstance ([1,2,3],iterable)	Isinstance (123,iterable)

enumerateFunction

 for  in Enumerate (['a','b','c'  ]):    Print i,value

python~ Iteration