Here, we are implementing a python program for various list operations, following operations are being performed in the list,

在这里，我们正在为各种列表操作实现python程序，正在列表中执行以下操作，

1. Declaring an integer list

   声明一个整数列表

2. Printing the complete list

   打印完整列表

3. Printing the first element of the list

   打印列表的第一个元素

4. Printing ith element of the list

   打印列表的第i个元素

5. Printing elements within the given indexes

   在给定索引中打印元素

6. Printing a specific element using negative indexing

   使用负索引打印特定元素

7. Appending an element to the list

   将元素追加到列表

8. Finding the index of a specific element in the list

   在列表中查找特定元素的索引

9. Sorting the list elements

   排序列表元素

10. Popping an element from the list

    从列表中弹出一个元素

11. Removing specified element from the list

    从列表中删除指定的元素

12. Inserting an element at specified index

    在指定索引处插入元素

13. Extending the list i.e. insert set of element (list) in the list

    扩展列表，即在列表中插入一组元素(列表)

14. Reversing list elements

    反转列表元素

用于各种列表操作的Python代码 (Python code for various list operation)

# Python code for various list operation
# declaring a list of integers
iList = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]
# List slicing operations
# printing the complete list
print('iList: ',iList)
# printing first element
print('first element: ',iList[0])
# printing fourth element
print('fourth element: ',iList[3])
# printing list elements from 0th index to 4th index
print('iList elements from 0 to 4 index:',iList[0: 5])
# printing list -7th or 3rd element from the list
print('3rd or -7th element:',iList[-7])
# appending an element to the list
iList.append(111)
print('iList after append():',iList)
# finding index of a specified element
print('index of \'80\': ',iList.index(80))
# sorting the elements of iLIst
iList.sort()
print('after sorting: ', iList);
# popping an element
print('Popped elements is: ',iList.pop())
print('after pop(): ', iList);
# removing specified element
iList.remove(80)
print('after removing \'80\': ',iList)
# inserting an element at specified index
# inserting 100 at 2nd index
iList.insert(2, 100)
print('after insert: ', iList)
# counting occurances of a specified element
print('number of occurences of \'100\': ', iList.count(100))
# extending elements i.e. inserting a list to the list
iList.extend([11, 22, 33])
print('after extending:', iList)
#reversing the list
iList.reverse()
print('after reversing:', iList)

Output

输出量

iList:  [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]
first element:  10
fourth element:  40
iList elements from 0 to 4 index: [10, 20, 30, 40, 50]
3rd or -7th element: 40
iList after append(): [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 111]
index of '80':  7
after sorting:  [10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 111]
Popped elements is:  111
after pop():  [10, 20, 30, 40, 50, 60, 70, 80, 90, 100]
after removing '80':  [10, 20, 30, 40, 50, 60, 70, 90, 100]
after insert:  [10, 20, 100, 30, 40, 50, 60, 70, 90, 100]
number of occurences of '100':  2
after extending: [10, 20, 100, 30, 40, 50, 60, 70, 90, 100, 11, 22, 33]
after reversing: [33, 22, 11, 100, 90, 70, 60, 50, 40, 30, 100, 20, 10]

翻译自: https://www.includehelp.com/python/program-for-various-list-operations.aspx