Python Programming Course

Introduction to Python

• Python is a popular programming language sought after for jobs.
• Beginner-friendly and easy to learn with very little syntax.
• Suitable for automating tasks, scripting, and more.

Getting Started

• Installing Python: Visit python.org/downloads. Choose Python 3.
• Choosing a Text Editor: Recommended IDE is PyCharm from JetBrains.

Python Basics

• First Program: Printing "Hello World"

print("Hello World")

• Variables and Data Types: Strings, integers, booleans
  • Example: character_name = "John"

Control Structures

If Statements

• Basic Structure:

if condition:
    # code
else:
    # code

• Comparison Operators: ==, !=, >, <, >=, <=
• Logical Operators: or, and, not

While Loops

• Basic Structure:

while condition:
    # code

• Example of looping through conditions

For Loops

• Used to iterate over sequences (like lists or strings)

for element in sequence:
    # code

Functions

• Defining Functions:

def function_name(parameters):
    # code

• Return Statements: Used to return a value from a function

Working with Strings

• String Methods: .upper(), .lower(), .isupper(), .islower(), .index(), .replace()

phrase = "Hello"
print(phrase.upper()) # Output: HELLO

Working with Lists

• Basic Structure:

list_name = [item1, item2, item3]

• List Methods: .append(), .insert(), .remove(), .clear(), .pop(), .sort(), .reverse(), .copy()

Tuples

• Defining Tuples (immutable lists)

tuple_name = (item1, item2)

Exception Handling

• Try-Except Block: To handle potential errors

try:
    # code
except Exception as e:
    # code

Reading and Writing Files

• Open File: Modes r, w, a, r+

file = open('filename.txt', 'r')
content = file.read()
file.close()

• Writing/Appending to File:

file = open('filename.txt', 'a')
file.write('add this text')
file.close()

Modules

• Importing Modules: Import custom or built-in modules

import module_name
from module_name import specific_function

• Using Pip: Install external modules

pip install module_name

Classes and Objects

• Defining Classes:

class ClassName:
    def __init__(self, attr1, attr2):
        self.attr1 = attr1
        self.attr2 = attr2

• Creating Objects:

object_name = ClassName(attr1, attr2)

Advanced Topics

Inheritance

• Inheriting Classes:

class SubClass(SuperClass):
    # Additional or overridden methods

Functions in Classes

• Defining Methods within Classes to modify or retrieve object data.

Using the Python Interpreter

• Activating Interpreter:

python3

• Test out Python commands quickly and easily.