2.python中的排序

元组的排序(元组是不可变的,序列是可变化的)
listCopy = list(myTuple)
listCopy.sort()
for item in listCopy:
print item

字典的排序


>>> testList=['this','a','As','sorted','is','List']
>>> testList.sort()
>>> print testList
['As', 'List', 'a', 'is', 'sorted', 'this']
>>> def caseIndependentSort(so,other):
so,other = string.lower(so),string.lower(other)
return cmp(so,other)

>>> cmp(1,4)
-1
>>> cmp(4,1)
1
>>> cmp(2,2)

File "<pyshell#39>", line 1
cmp(2,2)
^
IndentationError: unexpected indent
>>> cmp(2,2)
0
>>> testList.sort(caseIndepentSort)

Traceback (most recent call last):
File "<pyshell#41>", line 1, in <module>
testList.sort(caseIndepentSort)
NameError: name 'caseIndepentSort' is not defined
>>> testList.sort(caseIndependentSort)

Traceback (most recent call last):
File "<pyshell#42>", line 1, in <module>
testList.sort(caseIndependentSort)
File "<pyshell#36>", line 2, in caseIndependentSort
so,other = string.lower(so),string.lower(other)
NameError: global name 'string' is not defined
>>> import string
>>> testList.sort(caseIndependentSort)
>>> print testList
['a', 'As', 'is', 'List', 'sorted', 'this']
>>>