Python Tutorial Overview

Introduction

• Python tutorial for beginners with no prior knowledge needed.
• Learn Python for data science, machine learning, or web development.
• Instructor: Mosh Hamedani, known for coding tutorials.
• Subscribe for weekly videos.
• Uses of Python:
  • Machine learning and AI.
  • Web development (Django framework).
  • Automation of repetitive tasks.

Installation

• Download Python from python.org
• Ensure to add Python to PATH on Windows.
• Use code editor PyCharm (Community Edition for free).
• Set up a new Python project in PyCharm.

Writing Python Code

• Example program: print('Hello World').
• Strings: sequence of characters, use quotes.
• Functions: print() is used to display output.

Variables

• Store data temporarily in memory.
• Example: age = 20, price = 19.95.
• Booleans: True or False values.
• Python is case-sensitive.

User Input

• Use input() to receive input from the user.
• Convert input data types using int(), float(), str(), and bool().

Strings

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

Arithmetic Operations

• Basic operators: +, -, *, /, //, %, **.
• Augmented assignment operators: +=, -=, *=, etc.
• Operator precedence rules are similar to math.

Comparison and Logical Operators

• Comparison: >, >=, <, <=, ==, !=.
• Logical: and, or, not for building conditions.

Control Flow

• If Statements: Make decisions based on conditions.
• Exercise: Weight converter program.

Loops

• While Loops: Repeat code blocks based on a condition.
• For Loops: Iterate over lists or sequences.

Lists

• Store sequences of items.
• Use square brackets [].
• Methods: .append(), .insert(), .remove(), .clear().
• List indexing and slicing.

Tuples

• Similar to lists but immutable.
• Use parentheses ().
• Methods: .count(), .index().

Additional Resources

• Comprehensive Python course available online.
• Covers advanced topics with certification.