Level 1: Python for Beginners

Under construction Hello and welcome to my Python beginners course. 🐍 In this repository, you will find a variety of code examples, projects, exercises, and informative insights in each script. The goal is to build a free, high-quality, and easy-to-understand tutorial. In the future, I plan to create a detailed script that further deepens the theoretical content.

---

Topics

00_Course_Material Under construction

• PythonBeginnerGuide_fl97-mo.ipynb: Your personal Python mentor!
  • Theoretical introduction to Python with practical examples
  • Interactively designed

01_Basics

• HelloWorld.py: A simple script used to test GitHub settings and print "Hello, World!"
• ArithmeticOperators.py: Explanation and demonstration of arithmetic operators
• Variables.py: What is a variable, how do I use it?
  • Assigning values to variables of different data types (strings, integers, floats, booleans)
  • Reassigning variables and changing their values or types throughout the code
  • Assigning multiple variables in one line
  • Checking the type of a variable using type().
• Input_TypeConversion: Working with user input and converting data types
  • input() function for user interaction
  • Converting data types using int(), float(), and str().
• StringOperations.py: String functions explained
  • Creating and indexing strings
  • Combining (concatenating), converting, and formatting strings
  • text[::4], .lower(), .upper(), .replace(), .split(), "-".join(), f"{variable}", .format()

02_Control_Structures

• Boolean_Logic_Conditionals.py: Introduction to boolean logic and conditional statements
  • True and False values
  • Comparison operators (==, !=, >, <, >=, <=)
  • Logical operators (and, or, not)
• Loops.py: Basic introduction into loops
  • while loops for conditional execution
  • for loops for iterating over sequences
  • Examples including skipping iterations, breaking out of loops, and reverse looping
• NestedLoops.py: Understanding the logic behind it and be able to apply it in practice
  • Printing a square pattern
  • Iterating over a shopping cart (list of dictionaries)
  • Creating a multiplication table (2d matrix)
• ErrorHandling.py: Basics of error handling in Python
  • Using try, except, else, and finally
  • Handling ValueError and ZeroDivisionError

03_Functions

• Basics.py: Examples showcasing:
  • Defining a simple function
  • Using parameters to pass values
  • Returning values from functions
  • Getting user input and performing calculations
  • 
• Args_Kwargs.py: Making functions more flexible:
  • funtion(*args): use custom amount of arguments
  • function(**kwargs): use custom amount of key:value pairs

04_Data_Structures

• Collections.py: Explaination and examples of collection types
  • Lists
  • Sets
  • Tuples
• Dictionaries.py: A special type of collection with key-value pairs
  • Adding, updating and removing pairs
  • Accessing pairs
  • Iterating over dictionaries
• ListComprehensions.py: Compact way to create and manipulate lists
  • Basic syntax: [EXPRESSION for ITEM in ITERABLE]
  • if and if-else list comprehensions

05_Modules

• 01_BuiltInModules/Math.py: Exploring Python's math module
  • Common mathematical functions like sqrt(), pow(), ceil(), and floor()
  • Recreating those functions manually
• 01_BuiltInModules/Random.py: Exploring Python's random module
  • Typically used functions like randint(), shuffle(), choices(), and randrange()
• 01_BuiltInModules/DateTime.py: Python's datetime module
  • Getting the current date and time, manipulating dates.
• 01_BuiltInModules/Statistics.py: Python's statistics module
  • Useful statistics funtions like mean(), median(), variance(), etc.
• 02_CustomModules/Supermarket.py: Creating our own supermarket module!
  • Defining own functions in our module calculate_total_price() and greet_customer()
  • Using Docstrings
  • Using main.py to import and use those

06_OOP_Basics

• 01_Objects/: Introduction to object-oriented programming
  • main.py: examples and executions of the product class
  • product.py: Defining the Product class -> a blueprint for creating objects (Products) with attributes and methods.
  • 
• 02_Inheritance/: Simple example of inheritance
  • main.py: examples and executions
  • store_product.py: Parent class
  • vegetable.py: Child class inheriting from store_product.py

07_Projects

• FizzBuzz.py: rather less a project, more a general question in coding interviews
  • Structure and short example
• ShoppingList.py: A shopping list program where you can:
  • Add, view, and remove products
  • Calculate the total cost
  • Track the quantity and price of each items
  • 
• ToDoList.py: A To-do-list where you can:
  • Create and add tasks to a list
  • Display the list
  • Remove items
  • 
• Hangman.py: A python version of the classic hangman game:
  • Visuals.py displaying ASCII art for the console
  • with 100 random words
  • 
• CeasarCipher.py: A simple encryption and decryption program using the Caesar cipher
  • Encrypts and decrypts messages by shifting the alphabet by a random number of positions
• Product_Information_Menu.py& While_Loop_Product_Information.py: Solutions to an exercise of the script

08_Algorithms

• BubbleSort.py: A simple algorithm to sort a list of values by comparing and swapping neighbors.
• InsertionSort.py: Builds sorted list each element at a time by inserting into the correct position.
• BreadthFirstSearch.py: A simple implementation of the Breadth-First Search algorithm
  • Finds the shortest path between locations in an unweighted graph
  • Queue-based approach to explore all possible paths and select the shortest one
  • 
• SelectionSort.py: Repeatedly selects the smallest element from the unsorted part and moves it to the beginning.

Quick Start

1. Clone the repository:

   git clone https://github.com/fl97-mo/Level-1-Python-Beginner-Guide

2. Navigate to the directory and run a script:

   cd Level-1-Python-Beginner-Guide

   python 01_Basics/HelloWorld.py