Python Programming Tutorial by Mosh Hamadani

Introduction

• Python is a multi-purpose programming language
• Useful for machine learning, AI, web development, and automation
• Popular websites like YouTube, Instagram, and Pinterest use Python
• Mosh Hamadani teaches Python from scratch

Setting Up Python

• Download Python from python.org
• Install Python and ensure it’s added to the system path
• Install a code editor like PyCharm (Community Edition is free)
• Create a Python project in PyCharm

Writing Your First Python Program

• Use print() function to display output
• Strings are enclosed in quotes (single or double)

Variables

• Store data values with variables
• Declare variables using =
• Example: age = 20
• Supports integers, floats, strings, and booleans
• Python is case-sensitive

User Input and Type Conversion

• input() function to receive input from users
• Convert input to desired type using int(), float(), bool(), or str()
• Handle type conversion to avoid errors

String Methods

• Strings have methods like .upper(), .lower(), .find(), and .replace()
• Use in operator to check for substrings

Arithmetic and Comparison Operators

• Basic operations: +, -, *, /
• Division: / (float), // (integer)
• Other operations: % (modulus), ** (exponentiation)
• Comparison: >, <, ==, !=, >=, <=***

Logical Operators

• Logical conditions: and, or, not
• Combine conditions in if statements

Control Flow: If Statements

• Use if, elif, and else to make decisions
• Indentation defines code blocks

Loops

• While Loops: Repeat code while a condition is true
  • Example: Print numbers 1 to 5
• For Loops: Iterate over sequences like lists, strings, or ranges

Lists

• Create lists using square brackets, e.g., names = ['John', 'Bob']
• Access elements using indices
• Lists are mutable
• Methods: append(), insert(), remove(), and clear()

Tuples

• Similar to lists but immutable
• Created using parentheses, e.g., numbers = (1, 2, 3)

Range Function

• Generate sequences of numbers
• Can specify start, stop, and step

Conclusion

• Python is versatile for various applications
• Practice exercises to deepen understanding
• Further learning available at Mosh's online coding school

Additional Resources

• Mosh’s coding school: codewithmosh.com