python实现忽略大小写对字符串列表排序的方法

string = '''
the stirng
Has many
line In
THE fIle
jb51 net
'''
list_of_string = string.split()
print list_of_string   #将字符串分离开，放入列表中
print '*'*50

def case_insensitive_sort(liststring):
  listtemp = [(x.lower(),x) for x in liststring]#将字符串列表，生成元组，（忽略大小写的字符串，字符串）
  listtemp.sort()#对元组排序，因为元组为：（忽略大小写的字符串，字符串），就是按忽略大小写的字符串排序

  return [x[1] for x in listtemp]#排序完成后，返回原字符串的列表

print case_insensitive_sort(list_of_string)#调用起来，测试一下

['the', 'stirng', 'Has', 'many', 'line', 'In', 'THE', 'fIle', 'jb51', 'net']
**************************************************
['fIle', 'Has', 'In', 'jb51', 'line', 'many', 'net', 'stirng', 'THE', 'the']

string = '''
the stirng
Has many
line In
THE fIle
jb51 net
'''
list_of_string = string.split()
print list_of_string   #将字符串分离开，放入列表中
print '*'*50

def case_insensitive_sort2(liststring):
  return sorted(liststring,key = str.lower)

print case_insensitive_sort2(list_of_string)#调用起来，测试一下

string = '''
the stirng
Has many
line In
THE fIle
jb51 net
'''
list_of_string = string.split()
print list_of_string   #将字符串分离开，放入列表中
print '*'*50

def case_insensitive_sort3(liststring):
  liststring.sort(cmp=lambda x,y: cmp(x.lower(), y.lower()))

case_insensitive_sort3(list_of_string)
print list_of_string