Creating lists in Python can take place by just placing the sequence inside the square brackets[]. Furthermore, it is important to understand that a list is unlike a set. This is because a list doesn’t require a built-in function for the creation of a list.
Creating Lists
Simple Guide to Creating Lists
When it comes to lists, the most important question is how to create a list in Python. Below is a simple example to help understand the process of creating list in python, a programming language. Here, the creation of two lists in Python will take place.
(1) List of Names – this list will contain strings whose placing is within quotes:
Names = [‘Peter’, ‘Bill’, ‘Samuel’, ‘Ronald’, ‘Jack’]
(2) Age list – this list will have the involvement of numbers (i.e., integers) without quotes:
Age = [25, 18, 55, 30, 23]
Putting everything together, this is how the Python code would appear for the purpose of creating lists in Python:
Names = [‘Peter’, ‘Bill’, ‘Samuel’, ‘Ronald’, ‘Jack’]
Age = [25, 18, 55, 30, 23]
print(Names)
print (Age)
A quick verification of creating lists can take place by adding the type() syntax as follows:
Names = [‘Peter’, ‘Bill’, ‘Samuel’, ‘Ronald’, ‘Jack’]
Age = [25, 18, 55, 30, 23]
print(type(Names))
print (type(Age))
Browse more Topics under Lists
- Initializing and Accessing the Elements
- Traversing Lists
- Appending Lists
- Updating and Deleting Elements
- Composition
- Lists as Arguments
- List Functions and Methods
Demonstration of Python List Creation
# Python program to demonstrate
# Creation of List
# Creating a List
List = []
print("Blank List: ")
print(List)
# Creating a List of numbers
List = [10, 20, 14]
print("\nList of numbers: ")
print(List)
# Creating a List of strings and accessing
# using index
List = ["Toppr", "For", "Toppr"]
print("\nList Items: ")
print(List[0])
print(List[2])
# Creating a Multi-Dimensional List
# (By Nesting a list inside a List)
List = [['Toppr', 'For'] , ['Toppr']]
print("\nMulti-Dimensional List: ")
print(List)
Output:
Blank List:
[]
List of numbers:
[10, 20, 14]
List Items
Toppr
Toppr
Multi-Dimensional List:
[['Toppr', 'For'], ['Toppr']]
Creating Lists with Duplicate Elements
It is possible that a Python list may involve duplicate values with their distinct positions. Therefore, at the time of creating lists, it is possible to pass duplicate elements or multiple distinct elements as a sequence.
# Creating a List with
# the use of Numbers
# (Having duplicate values)
Furthermore, List = [1, 2, 4, 4, 3, 3, 3, 6, 5]
print("\nList with the use of Numbers: ")
print(List)
# Creating a List with
# mixed type of values
# (Having numbers and strings)
List = [1, 2, 'Toppr', 4, 'For', 6, 'Toppr']
print("\nList with the use of Mixed Values: ")
print(List)
Output:
List with the use of Numbers:
Most noteworthy = [1, 2, 4, 4, 3, 3, 3, 6, 5]
List with the use of Mixed Values:
[1, 2, 'Toppr', 4, 'For', 6, 'Toppr']
Knowing the size of List
# Creating a List
List1 = []
print(len(List1))
# Creating a List of numbers
List2 = [10, 20, 14]
print(len(List2))
# Creating a List with
# the use of Numbers
# (Having duplicate values)
Furthermre, the List = [1, 2, 4, 4, 3, 3, 3, 6, 5]
print("\nList with the use of Numbers: ")
print(List)
# Creating a List with
# mixed type of values
# (Having numbers and strings)
List = [1, 2, 'Toppr', 4, 'For', 6, 'Toppr']
print("\nList with the use of Mixed Values: ")
print(List)
Output:
List with the use of Numbers:
Most noteworthy, [1, 2, 4, 4, 3, 3, 3, 6, 5]
List with the use of Mixed Values:
[1, 2, 'Toppr', 4, 'For', 6, 'Toppr']
Knowing the size of List
# Creating a List
List1 = []
print(len(List1))
# Creating a List of numbers
List2 = [10, 20, 14]
print(len(List2)
Output:
0
3
FAQs For Creating Lists
Question 1: Briefly explain the procedure of creating lists in python?
Answer 1: In Python programming, the creation of a list takes place by placing all the items elements inside square brackets []. Furthermore, their separation is by commas. Moreover, a list can have any number of items and can also be of different types (integer, float, string etc.).
Question 2: What is the use of the list() function?
Answer 2: The list() function facilitates the creation of a list object and the syntax associated with this particular function is list(iterable). Moreover, a list object refers to a collection that is changeable as well as ordered. Furthermore, below is the example of the list() Python function:
Create a list containing fruit names:
x = list((‘apple’, ‘banana’, ‘cherry’))
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