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Hajipur, Bihar, 844101
Python
Introduction to Python
Python Basics
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Python Syntax
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Python Comments
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Python Variables
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Python Data Types
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Python Casting
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Python I/O
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Python Operators
Cotrol Structures
Data Structures
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Python Strings
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Python Lists
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Python Tuples
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Python Dictionaries
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Python Sets
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Python Arrays
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Python Bytes and Bytearray
Date and Time
Functions and Module
File Handling
Python OOP
Advanced Concepts
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Python Scope
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Python Modules
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Python JSON
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Python RegEx
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Python PIP
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Python Try...Except
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Python String Formatting
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Python User Input
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Python VirtualEnv
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Python Math
Python DSA
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Python DSA
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Lists and Arrays
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Python Stacks
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Python Queues
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Linked Lists
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Python Hash Tables
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Python Trees
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Python Binary Trees
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Binary Search Trees
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Python AVL Trees
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Python Graphs
Searching Algorithms
Sorting Algorithms
Python Arrays
In Python, you can use arrays with the array module when working with data of the same type.
While lists are more common, arrays are useful for performance in large datasets.
🔹 Import Array Module
import array
🔹 Create an Array
import array
numbers = array.array("i", [1, 2, 3, 4])
print(numbers)
Note: "i" stands for integer. Other type codes include:
| Code | Type |
|---|---|
| 'i' | Integer |
| 'f' | Float |
| 'd' | Double |
| 'u' | Unicode char |
🔹 Access Array Elements
print(numbers[0]) # 1
print(numbers[2]) # 3
🔹 Loop Through Array
for num in numbers:
print(num)
🔹 Add Elements
numbers.append(5) # Add at end
numbers.insert(1, 10) # Insert at index 1
🔹 Remove Elements
numbers.remove(2) # Remove value
numbers.pop() # Remove last item
🔹 Get Length
print(len(numbers)) # 5
🔹 Update Item
numbers[0] = 100
🔹 Array Methods
| Method | Description |
|---|---|
append() |
Adds element to the end |
insert() |
Adds at specified index |
remove() |
Removes value |
pop() |
Removes last element |
reverse() |
Reverses the array |
extend() |
Adds elements from another array |
🧪 Try It Yourself
Practice creating arrays, adding/removing elements, and using array methods.
Practice Questions
Q1. Write a Python program to create an array of integers with values 1 to 5 using the array module.
Q2. Write a Python program to print the third element of the array.
Q3. Write a Python program to append the number 6 to the array using append().
Q4. Write a Python program to insert the number 10 at index 2 using insert().
Q5. Write a Python program to remove the number 2 from the array using remove().
Q6. Write a Python program to pop the last item from the array using pop().
Q7. Write a Python program to replace the first element of the array with 99.
Q8. Write a Python program to loop through the array and print each number.
Q9. Write a Python program to find the length of the array using len().
Q10. Write a Python program to use reverse() to reverse the array order.
Python
Introduction to Python
Python Basics
-
Python Syntax
-
Python Comments
-
Python Variables
-
Python Data Types
-
Python Casting
-
Python I/O
-
Python Operators
Cotrol Structures
Data Structures
-
Python Strings
-
Python Lists
-
Python Tuples
-
Python Dictionaries
-
Python Sets
-
Python Arrays
-
Python Bytes and Bytearray
Date and Time
Functions and Module
File Handling
Python OOP
Advanced Concepts
-
Python Scope
-
Python Modules
-
Python JSON
-
Python RegEx
-
Python PIP
-
Python Try...Except
-
Python String Formatting
-
Python User Input
-
Python VirtualEnv
-
Python Math
Python DSA
-
Python DSA
-
Lists and Arrays
-
Python Stacks
-
Python Queues
-
Linked Lists
-
Python Hash Tables
-
Python Trees
-
Python Binary Trees
-
Binary Search Trees
-
Python AVL Trees
-
Python Graphs
Searching Algorithms
Sorting Algorithms
