Nogle af listemetoderne er nævnt i sæt 1 nedenfor
Flere metoder diskuteres i denne artikel.
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1. af[a :b]
:- Denne metode
sletter alle elementer i området
startende fra indeks 'a' til 'b' nævnt i argumenter.
2. pop()
:- Denne metode
sletter
elementet
ved stillingen
nævnt i sine argumenter.
Python# Python code to demonstrate the working of # del and pop() # initializing list lis = [2 1 3 5 4 3 8] # using del to delete elements from pos. 2 to 5 # deletes 354 del lis[2 : 5] # displaying list after deleting print ('List elements after deleting are : 'end='') for i in range(0 len(lis)): print(lis[i] end=' ') print('r') # using pop() to delete element at pos 2 # deletes 3 lis.pop(2) # displaying list after popping print ('List elements after popping are : ' end='') for i in range(0 len(lis)): print(lis[i] end=' ')
Produktion:
List elements after deleting are : 2 1 3 8
List elements after popping are : 2 1 8
3. indsæt (a x)
:- Denne funktion
indsætter et element på positionen
nævnt i sine argumenter. Det kræver 2 argumenter
position og element, der skal tilføjes på respektive position.
4. fjern()
:- Denne funktion bruges til
slette den første forekomst
antal nævnt i sine argumenter.
Python# Python code to demonstrate the working of # insert() and remove() # initializing list lis = [2 1 3 5 3 8] # using insert() to insert 4 at 3rd pos lis.insert(3 4) # displaying list after inserting print('List elements after inserting 4 are : ' end='') for i in range(0 len(lis)): print(lis[i] end=' ') print('r') # using remove() to remove first occurrence of 3 # removes 3 at pos 2 lis.remove(3) # displaying list after removing print ('List elements after removing are : ' end='') for i in range(0 len(lis)): print(lis[i] end=' ')
Produktion:
List elements after inserting 4 are : 2 1 3 4 5 3 8
List elements after removing are : 2 1 4 5 3 8
5. sorter()
:- Denne funktion
sorterer
java-sammenkædede strenge
listen i
stigende orden
.
6. omvendt()
:- Denne funktion
vender om
elementerne i listen.
Python# Python code to demonstrate the working of # sort() and reverse() # initializing list lis = [2 1 3 5 3 8] # using sort() to sort the list lis.sort() # displaying list after sorting print ('List elements after sorting are : ' end='') for i in range(0 len(lis)): print(lis[i] end=' ') print('r') # using reverse() to reverse the list lis.reverse() # displaying list after reversing print ('List elements after reversing are : ' end='') for i in range(0 len(lis)): print(lis[i] end=' ')
Produktion:
List elements after sorting are : 1 2 3 3 5 8
List elements after reversing are : 8 5 3 3 2 1
7. forlænge(b)
:- Denne funktion bruges til
udvide listen med
elementerne i
en anden liste
. Denne funktion tager
en anden liste som argument
.
8. clear()
:- Denne funktion bruges til
slette alle elementer
af listen. Efter denne handling bliver listen tom.
Python# Python code to demonstrate the working of # extend() and clear() # initializing list 1 lis1 = [2 1 3 5] # initializing list 1 lis2 = [6 4 3] # using extend() to add elements of lis2 in lis1 lis1.extend(lis2) # displaying list after sorting print ('List elements after extending are : ' end='') for i in range(0 len(lis1)): print(lis1[i] end=' ') print ('r') # using clear() to delete all lis1 contents lis1.clear() # displaying list after clearing print ('List elements after clearing are : ' end='') for i in range(0 len(lis1)): print(lis1[i] end=' ')
Produktion:
List elements after extending are : 2 1 3 5 6 4 3
List elements after clearing are :