defsorted(*args, **kwargs):#real signature unknown"""Return a new list containing all items from the iterable in ascending order. A custom key function can be supplied to customize the sort order, and the reverse flag can be set to request the result in descending order."""pass 给它一...
classmethod(function):返回函数的类方法。 compile(source, filename, mode, flags=0, dont_inherit=False, optimize=-1):把字符串编译成python可执行的代码。 >>> str="print('lady')" >>> a=compile(str,'','eval')>>>eval(a) lady complex([real[, imag]]):将数字或者字符串转化为复数。如果第...
Python3.x: 1>>>help(sorted)2Help on built-infunction sortedinmodule builtins:34sorted(iterable, /, *, key=None, reverse=False)5Return a new list containing all itemsfromthe iterableinascending order.67A custom key function can be supplied to customize the sort order,andthe8reverse flag c...
defsorted(*args, **kwargs):#real signature unknown"""Return a new list containing all items from the iterable in ascending order. A custom key function can be supplied to customize the sort order, and the reverse flag can be set to request the result in descending order."""pass 1. 2....
defcmp_to_key(mycmp):"""Convert a cmp= function into a key= function"""classK(object):__slots__=['obj']def__init__(self,obj):self.obj=obj def__lt__(self,other):returnmycmp(self.obj,other.obj)<0def__gt__(self,other):returnmycmp(self.obj,other.obj)>0def__eq__(self,ot...
Pythonsorted()Function ❮ Built-in Functions ExampleGet your own Python Server Sort a tuple: a = ("b","g","a","d","f","c","h","e") x =sorted(a) print(x) Try it Yourself » Definition and Usage Thesorted()function returns a sorted list of the specified iterable object. ...
3)Operator Module Functions (Operator模块中的函数)上⾯的key-function模式很常见，因此Python提供了⽅便的函数使得祖先函数更简单和快捷。operator module有itemgetter,attrgetter，以及从Python2.6开始的methodcaller函数。使⽤这些函数，上⾯的例⼦会变得更简单和快捷：>>> from operator import itemgetter, ...
[6, 9, 3, 1] 我们还可以通过调用sorted的help()来确认所有这些观察结果。可选参数key和reverse将在本教程后面介绍: >>> # Python 3 >>> help(sorted) Help on built-in function sorted in modulebuiltins: sorted(iterable, /, *, key=None, reverse=False) ...
>>> # Python 3>>> help(sorted)Help on built-in function sorted in module builtins:sorted(iterable, /, *, key=None, reverse=False) Return a new list containing all items from the iterable in ascending order. A custom key function can be supplied to customize the sort order, and the ...
将老式的比较函数(comparison function)转化为关键字函数(key function)。与接受key function的工具一同使用(如 sorted(), min(), max(), heapq.nlargest(), itertools.groupby())。该函数主要用来将程序转成 Python 3 格式的,因为 Python 3 中不支持比较函数。