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प्रश्न
Differentiate between append() and extend() functions of list.
उत्तर
The append() function takes a single element as an argument and appends it to the list. The argument can be any datatype, even a list. The argument will be added as a single element.
>>>list1 = [10, 20, 30]
>>>list1.append(40)list1 will now be [10, 20, 30, 40].
>>>list1 = [10, 20, 30]
>>>list1.append([40, 50])Here [40, 50] is a list that will be considered as a single argument, and will be added to the list at index 3. 'list1' will now be [10, 20, 30, [40, 50]].
The extend() function takes any iterable data type (e.g. list, tuple, string, dictionary) as an argument and adds all the elements of the list passed as an argument to the end of the given list. This function can be used to add more than one element in the list in a single statement.
>>> list1 = [2, 4, 5, 6]
>>> list1.extend((2, 3, 4, 5))
>>> print(list1)
OUTPUT:
[2, 4, 5, 6, 2, 3, 4, 5]APPEARS IN
संबंधित प्रश्न
Consider the following list myList. What will be the elements of myList after the following operation:
myList = [10,20,30,40]
myList.append([50,60])Consider the following list myList. What will be the elements of myList after the following operation:
myList = [10,20,30,40]
myList.extend([80,90])What will be the output of the following code segment:
myList = [1,2,3,4,5,6,7,8,9,10]
for i in range(0,len(myList)):
if i%2 == 0:
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Hint: You can use a built-in function to sort the list.
Write a program to read a list of elements. Input an element from the user that has to be inserted in the list. Also, input the position at which it is to be inserted. Write a user-defined function to insert the element at the desired position in the list.
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