Lists data structures in Python

 

Example 1: Creating a List

In [2]:

# Creating a list of numbers

numbers = [1, 2, 3, 4, 5]

​

# Creating a list of strings

fruits = ["apple", "banana", "orange"]

​

# Creating a mixed-type list

mixed_list = [1, "hello", 3.14, True]

​

# Creating an empty list

empty_list = []

​

# Displaying the lists

print(numbers)

print(fruits)

print(mixed_list)

print(empty_list) #clcoding.com

[1, 2, 3, 4, 5]
['apple', 'banana', 'orange']
[1, 'hello', 3.14, True]
[]

Example 2: Accessing Elements in a List

In [3]:

# Accessing individual elements

print(fruits[0])  

print(numbers[-1])  

​

# Slicing a list

print(numbers[1:4]) 

print(fruits[:2])    

​

#clcoding.com

apple
5
[2, 3, 4]
['apple', 'banana']

Example 3: Modifying Elements in a List

In [4]:

# Modifying elements

fruits[1] = "grape"

print(fruits)  

​

# Appending elements

fruits.append("kiwi")

print(fruits)  

​

# Extending a list with another list

fruits.extend(["mango"])

print(fruits)  

​

#clcoding.com

['apple', 'grape', 'orange']
['apple', 'grape', 'orange', 'kiwi']
['apple', 'grape', 'orange', 'kiwi', 'mango']

Example 4: Removing Elements from a List

In [4]:

# Removing by value

fruits.remove("orange")

print(fruits)  

​

# Popping by index

popped_fruit = fruits.pop(1)

print(f"Popped fruit: {popped_fruit}") 

print(fruits)  

​

#clcoding.com

['apple', 'grape', 'kiwi', 'mango', 'pineapple']
Popped fruit: grape
['apple', 'kiwi', 'mango', 'pineapple']

Example 5: List Operations

In [5]:

# Length of a list

print(len(fruits)) 

​

# Checking if an element is in a list

print("kiwi" in fruits)  

​

# Concatenating lists

new_list = numbers + [6, 7, 8]

print(new_list)  

​

#clcoding.com

4
True
[1, 2, 3, 4, 5, 6, 7, 8]

Example 6: List Iteration

In [6]:

# Iterating through a list

for fruit in fruits:

    print(f"Fruit: {fruit}")

​

# Enumerating a list

for index, fruit in enumerate(fruits):

    print(f"Index: {index}, Fruit: {fruit}")

​

    #clcoding.com

Fruit: apple
Fruit: kiwi
Fruit: mango
Fruit: pineapple
Index: 0, Fruit: apple
Index: 1, Fruit: kiwi
Index: 2, Fruit: mango
Index: 3, Fruit: pineapple