Problem StatementPerform the following methods in a list 1) append() 2) len() 3) pop() 4) clear().Input Format:First three lines input contains list of elements,an appended element,index to be popped.Output Format:First three lines of output contains a list of elements after inserting an element and list if elements after poped specific index value,length of the list,To represent a list after clear.Sample Input:1 2 3 4 5 673Sample Output:[1, 2, 3, 4, 5, 6, 7][1, 2, 3, 5, 6, 7]6[]
Question
Problem StatementPerform the following methods in a list 1) append() 2) len() 3) pop() 4) clear().Input Format:First three lines input contains list of elements,an appended element,index to be popped.Output Format:First three lines of output contains a list of elements after inserting an element and list if elements after poped specific index value,length of the list,To represent a list after clear.Sample Input:1 2 3 4 5 673Sample Output:[1, 2, 3, 4, 5, 6, 7][1, 2, 3, 5, 6, 7]6[]
Solution
The problem statement is asking to perform various operations on a list in Python. Here are the steps to solve this problem:
-
First, we need to create a list. In Python, a list is created by placing all the items (elements) inside square brackets [], separated by commas. For example,
list1 = [1, 2, 3, 4, 5, 6]. -
The
append()method in Python adds a single item to the existing list. It doesn't return a new list; rather it modifies the original list. For example,list1.append(7)will add the number 7 to the end of the list. -
The
len()function in Python returns the number of items in an object. When the object is a list, thelen()function returns the number of items in the list. For example,len(list1)will return 7, because there are 7 items in the list. -
The
pop()method in Python is used to remove an element from the list at the specified index. If no index is specified,pop()removes and returns the last item in the list. For example,list1.pop(3)will remove the 4th item (index starts from 0) from the list. -
The
clear()method in Python is used to remove all items from the list. For example,list1.clear()will remove all items from the list, and the list will become empty.
Here is the Python code that performs all these operations:
# create a list
list1 = [1, 2, 3, 4, 5, 6]
# append 7 to the list
list1.append(7)
print(list1) # output: [1, 2, 3, 4, 5, 6, 7]
# print the length of the list
print(len(list1)) # output: 7
# pop the 4th item from the list
list1.pop(3)
print(list1) # output: [1, 2, 3, 5, 6, 7]
# clear the list
list1.clear()
print(list1) # output: []
This code will produce the sample output given in the problem statement.
Similar Questions
What will be the output of the following Python code?def value(L): ''' (list) -> list ''' k = 0 res = [] while k < len(L): res.append(L[k]) k = k + 3 return resOptionsReturn a list containing the items from L starting from index 0, omitting every third itemReturn an empty listReturn a list containing every third item from L starting at index 0Return a list containing every third index from L starting at index 0
Problem StatementTo remove duplicates from a list.Input Format:Single line of input contain a list of elements.Output Format:Single line of output contain a list of elements after removing the duplicatesSample Input:1 2 1 5 3 4 5Sample Output:[1, 2, 3, 4, 5]
Input: 3 (Size), 1 2 3 (Initial elements)Output: List before deletion: 1 2 3Output: List after deletion: 1 2Public Test Cases:# INPUT EXPECTED OUTPUT1 3123List before deletion :1 2 3 List after deletion 1 2
Consider the following code snippet:1. list = [ [ ] ] * 52. list # output?3. list[0].append(10)4. list # output?5. list[1].append(20)6. list # output?7. list.append(30)8. list # output?Analyse and select the outputs for the lines 2, 4, 6, and 8?Select one:[[], [], [], [], []][[10], [10], [10], [10], [10]][[10, 20], [10, 20], [10, 20], [10, 20], [10, 20]][[10, 20], [10, 20], [10, 20], [10, 20], [10, 20], [10,30]][[], [], [], [], []][[], [], [], [], [],[10]][[10, 20], [10, 20], [10, 20], [10, 20], [10, 20]][[10, 20], [10, 20], [10, 20], [10, 20], [10, 20], 30][[], [], [], [], []][[10], [10], [10], [10], [10]][[10, 20], [10, 20], [10, 20], [10, 20], [10, 20]][[10, 20], [10, 20], [10, 20], [10, 20], [10, 20], 30][[], [], [], [], []][[10], [10], [10], [10], [10]][[10], [10], [10], [10], [10],[20]][[10, 20], [10, 20], [10, 20], [10, 20], [10, 20], [10,30]]
What will be the output of the below code?list1 = [1, 2, 3]list1.append([4, 5, 6])print(len(list1))Select one:3456
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