How To Add User Input To A List In Python

Python Become a listing as input from user

In this article we will see you how to inquire the user to enter elements of a list and finally create the list with those entered values.

With format and input

The format function tin be used to make full in the values in the identify holders and the input function will capture the value entered by the user. Finally, we volition suspend the elements into the list one by one.

Example

listA = [] # Input number of elemetns n = int(input("Enter number of elements in the list : ")) # iterating till the range for i in range(0, n):    print("Enter element No-{}: ".format(i+ane))    elm = int(input())    listA.append(elm) # adding the element print("The entered list is: \n",listA)

Output

Running the in a higher place code gives us the post-obit effect −

Enter number of elements in the list : four Enter element No-1: 7 Enter element No-ii: 45 Enter chemical element No-3: ane Enter element No-iv: 74 The entered list is: [seven, 45, 1, 74]

With map

Another arroyo is to ask the user to enter the values continuously only separated by comma. Here nosotros apply the map office together the inputs into a listing.

Example

listA = [] # Input number of elemetns n = int(input("Enter number of elements in the list : ")) # Enter elements separated by comma listA = list(map(int,input("Enter the numbers : ").strip().split(',')))[:northward] impress("The entered list is: \north",listA)

Output

Running the above code gives us the following result −

Enter number of elements in the list : 4 Enter the numbers : 12,45,65,32 The entered listing is: [12, 45, 65, 32]

Entering list of lists

We tin can also use input part twice so that we tin can create a list of lists. Use the range function to keep account on number of elements to be entered and the format function to enter the elements one past ane. Finally, we append each entered element to the newly created list.

Example

listA = [] # Input number of elemetns n = int(input("Enter number of elements in the list : ")) # Each sublist has two elements for i in range(0, n):    impress("Enter element No-{}: ".format(i + i))    ele = [input(), int(input())]    listA.suspend(ele) print("The entered list is: \n",listA)

Output

Running the above lawmaking gives us the post-obit upshot −

Enter number of elements in the listing : two Enter chemical element No-ane: 'Mon' iii Enter element No-2: 'Tue' 4 The entered list is: [["'Mon'", 3], ["'Tue'", 4]]