Python Programming Lecture Notes

Introduction to Python

• Python is easy to learn and the most popular programming language.
• New Python developers earn an average salary of $64,000 in the U.S.

Installing Python

1. Download Python from python.org/downloads.
2. Check "Add Python 3.9 to PATH" during installation.
3. Complete installation and confirm success.

Integrated Development Environment (IDE)

• Recommended IDE: PyCharm.

1. Download PyCharm from jetbrains.com/pycharm.
2. Follow standard installation procedures.

Creating Your First Project

• Create a new project in PyCharm, name it HelloWorld.
• Create a new Python file named main.py.
• First line of code: print("I love pizza").
• Run the script to see output in the terminal.

Python Variables and Data Types

Variables

• A variable is a container for a value.
• Variables can hold different data types (strings, integers, booleans, etc.).

Data Types

1. Strings: Use single or double quotes.
   • Example: name = "Bro"
2. Integers: Whole numbers.
   • Example: age = 21
3. Floats: Decimal numbers.
   • Example: height = 175.5
4. Booleans: True or False.
   • Example: is_human = True

Creating Variables

• Define a variable: name = "Bro".
• Print name to the console: print(name).

Using IDE Features

• Change font size and color in PyCharm to enhance visibility.

Functions

• Create functions for repetitive tasks.
• Example: def greet(name): print(f"Hello, {name}!")

Control Structures

If Statements

• Check conditions and execute blocks based on truthiness.
• Syntax: if condition: # code to execute

Loops

• Use loops to iterate over data structures.
• Example: for i in range(10): print(i).

Object-Oriented Programming

• Create classes to define objects with attributes and methods.
• Example: class Dog: def bark(self): print("Woof!")

GUI Programming

Creating Windows

• Use Tkinter to create graphical user interfaces.
• Example: from tkinter import Tk and window = Tk().

Widgets

• Add widgets like buttons, labels, and text areas to your GUI.
• Example: button = Button(window, text="Click Me")

Event Handling

• Bind functions to events (e.g., button clicks).
• Example: button.config(command=my_function).

Summary

• Python is a versatile programming language with various applications.
• Understanding data types, functions, and object-oriented programming is crucial.
• Tkinter allows for GUI development in Python.