The difference between Python sort, sorted, reverse, reverd

The difference between sort, sorted, reverse, reversed

!!! The first thing that error should distinguish is that sort and reverse are a way to list. strings, tuples, dictionaries, and collections do not have these two methods. and sorted and reversed are two built-in functions of Python, and only strings, lists, tuples, can be passed as parameters, dictionaries and collections are not supported, get a generator object
!!!

Sort and sorted ()

Sort
Only the list has this method, the original list is sorted directly, and no new list is generated

l1 = [12,2,34,54,5,17]l1.sort()  #[2, 5, 12, 17, 34, 54]l1.sort(reverse=True) #[54, 34, 17, 12, 5, 2]print(l1)

Sorted ()
will not change the order of the original sequence, you will get a new list from small to large, want to go from the big to the small directly after the sequence plus, reverse=true

s = "summer"res1 = sorted(s)print(s)  #summerprint(res1,type(res1)) #[‘e‘, ‘m‘, ‘m‘, ‘r‘, ‘s‘, ‘u‘] <class ‘list‘>l = [1,34,65,78,23]res2 = sorted(l)print(l) #[1, 34, 65, 78, 23]print(res2,type(res2)) #[1, 23, 34, 65, 78] <class ‘list‘>t = (12,34,32,12,4,23)res3 = sorted(t)print(t) #(12, 34, 32, 12, 4, 23)print(res3,type(res3)) #[4, 12, 12, 23, 32, 34] <class ‘list‘>d = {"name":"summer","age":"24","sex":"male"}res4 = sorted(d)print(d) #{‘name‘: ‘summer‘, ‘age‘: ‘24‘, ‘sex‘: ‘male‘}print(res4,type(res4))  #[‘age‘, ‘name‘, ‘sex‘] <class ‘list‘>#得到的是按照ASCII的顺序得到的keyst = {12,3,4,5}res5 = sorted(st)print(st) #{5, 3, 12, 4}print(res5,typsorted()与匿名函数配合使用l2 = [(1,1000),(2,18),(4,250),(3,500)]print(sorted(l2,key=lambda k:k[1]))print(sorted(l2,key=lambda k:k[1],reverse=True))[(2, 18), (4, 250), (3, 500), (1, 1000)][(1, 1000), (3, 500), (4, 250), (2, 18)]

Reverse and REVERESD ()

Reverse
Only the list has this method and reverses the original list directly

l1 = [1,2,10,7,5]res = l1.reverse()print(res)  #Noneprint(l1) #[5, 7, 10, 2, 1]

Reversed ()
Only strings, lists, tuples, can be passed as arguments, dictionaries and collections are not supported, and a generator object is not affected by the original sequence.

s = "summer"res1 = reversed(s)print(res1) #<reversed object at 0x101b60668>print(list(res1)) #[‘r‘, ‘e‘, ‘m‘, ‘m‘, ‘u‘, ‘s‘]print(s) #summerl = [1,34,65,78,23]res2 = reversed(l)print(res2) #<list_reverseiterator object at 0x101a60710>print(list(res2)) #[1, 34, 65, 78, 23]print(l) #[1, 34, 65, 78, 23]t = (12,34,32,12,4,23)res3 = reversed(t)print(res3) #<reversed object at 0x101a9a908>print(list(res3)) #[23, 4, 12, 32, 34, 12]print(t) #(12, 34, 32, 12, 4, 23)

The difference between Python sort, sorted, reverse, reverd