abdelkarim chichaou

Posts by abdelkarim chichaou:

February 21 2025

The best resources to learn Python

There are many great resources to learn Python, ranging from beginner-friendly to advanced. Here’s a list to get you started, categorized by different types of learning preferences:

1. Interactive Platforms

Codecademy – Offers hands-on, interactive lessons for learning Python, starting from basic syntax to more complex concepts.
DataCamp – Excellent for those looking to learn Python for data science and machine learning, with interactive exercises.
Exercism – Offers coding exercises with mentorship to help you master Python through practical experience.

2. Online Courses

Coursera: Python for Everybody – A popular beginner-to-intermediate course taught by Dr. Charles Severance (University of Michigan).
Udemy – Offers a variety of Python courses, from beginner to advanced topics, often with real-life project examples.

edX: Introduction to Computer Science and Programming Using Python – A great introductory course to programming with Python offered by MIT

3. Books

Automate the Boring Stuff with Python – A beginner-friendly book that focuses on using Python for automating everyday tasks. It’s available for free to read online.
Python Crash Course – A hands-on introduction to programming with Python for beginners. Covers the basics and then takes you through projects.
Learn Python the Hard Way – A free book that teaches Python with an emphasis on practice, structured for those who learn by doing.

4. Documentation and References

Official Python Documentation – The most authoritative resource for Python syntax, libraries, and modules. It’s very detailed and technical.
Real Python – Offers in-depth tutorials, articles, and videos on Python, including best practices, web development, data analysis, and more.
W3Schools Python Tutorial – A straightforward, beginner-friendly reference guide to Python syntax.

5. YouTube Channels

Corey Schafer – Corey Schafer has a popular YouTube channel with clear tutorials on Python programming, covering everything from basics to advanced concepts.
Tech With Tim – Offers tutorials and project-based learning for Python, focusing on practical applications.
Programming with Mosh – A great resource for beginner-friendly Python tutorials that go step-by-step.

6. Community and Forums

Stack Overflow – A huge community of developers where you can ask questions and find solutions to common Python problems.
Reddit: Learn Python – A subreddit dedicated to Python learners where you can ask for help, find resources, and engage with the community.
Python Discord – A community of Python learners and professionals where you can ask questions and get guidance in real-time.

7. Projects

Project Euler – A series of challenging mathematical/computer programming problems that require Python to solve.

February 16 2025

The common errors in Python

abdelkarim chichaou Python 0

1.SyntaxError: Invalid Syntax

Scenario: You’re writing a simple Python program, but you accidentally miss a parenthesis

def greet(name):

print(“Hello, “ + name) # SyntaxError: expected an indented block

Fix:Properly indent the code block.

def greet(name):

print(“Hello, “ + name)

2. IndentationError: Unexpected Indent

Scenario: You forgot to indent a line correctly within a function or control structure.

def add_numbers(a, b):

return a + b

Fix:Use proper indentation to define the block inside the function.

def add_numbers(a, b):

return a + b

3. TypeError: Unsupported Operand Type(s)

Scenario: You try to combine incompatible types, like a string and an integer.

a = “Hello”

b = 5

print(a + b)

Fix:Convert the integer to a string before concatenation.

print(a + str(b))

4. NameError: Name Not Defined

Scenario: You reference a variable that has not been defined in your code yet.

print(x)

Fix:Declare and initialize x before referencing it

x = 10

print(x)

5. IndexError: List Index Out of Range

Scenario: You attempt to access an index that doesn’t exist in a list.

my_list = [1, 2, 3]

print(my_list[5])

Fix:Ensure the index is within the valid range.

if len(my_list) > 5:

print(my_list[5])

else:

print(“Index out of range”)

6. ValueError: Invalid Value

Scenario: You’re trying to convert a string into a number, but the string can’t be interpreted as a valid number.

value = int(“Hello”)

Fix:Handle the conversion properly or use try-except to catch errors.

try:

value = int(“123“)

except ValueError:

print(“Invalid value for conversion.“)

7. KeyError: Key Not Found in Dictionary

Scenario: You try to access a key in a dictionary that doesn’t exist.

my_dict = {‘name‘: ‘Alice‘, ‘age‘: 30}

print(my_dict[‘address’])

Fix:Use .get() to avoid an exception when the key is not found.

print(my_dict.get(‘address‘, ‘Key not found‘))

8. AttributeError: Object Does Not Have the Method

Scenario: You try to use a method that doesn’t exist for a particular type of object.

“hello“.append(” world”)

Fix: Use string concatenation or other string methods.

“hello” += ” world”

9. ZeroDivisionError: Division by Zero

Scenario: You try to divide a number by zero

result = 10 / 0

Fix: Check if the denominator is zero before performing division.

denominator = 0

if denominator != 0:

result = 10 / denominator

else:

print(“Cannot divide by zero”)

10. FileNotFoundError: File Doesn’t Exist

Scenario: You attempt to open a file that doesn’t exist on the system.

with open(‘non_existent_file.txt’, ‘r’) as file:

content = file.read()

Fix:Ensure the file exists or use a try-except block to handle the error.