Advanced Concepts Level

Intermediate Tier

Dive deep into data structures, algorithms, recursion and decorators. This is where good programmers become great ones.

Topics Covered

Data StructuresAlgorithmsRecursionDecoratorsContext ManagersComprehensionsSortingSearching

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Lesson 1

Functions Are Objects — First-Class Functions

Lesson 1

Functions Are Objects — First-Class Functions

Lesson 2

Closures — Functions That Remember

Lesson 2

Closures — Functions That Remember

Lesson 3

Your First Decorator — The Basic Pattern

Lesson 3

Your First Decorator — The Basic Pattern

Lesson 4

@functools.wraps — Preserving Function Identity

Lesson 4

@functools.wraps — Preserving Function Identity

Lesson 5

Decorator Arguments — Parameterised Decorators

Lesson 5

Decorator Arguments — Parameterised Decorators

Lesson 6

Stacking Decorators — Multiple Decorators on One Function

Lesson 6

Stacking Decorators — Multiple Decorators on One Function

Lesson 7

Class-Based Decorators — Using call

Lesson 7

Class-Based Decorators — Using call

Lesson 8

Real-World Patterns — @retry, @timer, @cache

Lesson 8

Real-World Patterns — @retry, @timer, @cache

Lesson 9

Decorators in Practice — @validate, @log_calls, @require_auth

Lesson 9

Decorators in Practice — @validate, @log_calls, @require_auth

Lesson 10

Milestone: Decorator Toolkit — The Budget Dashboard's Engine

Lesson 10

Milestone: Decorator Toolkit — The Budget Dashboard's Engine

Lesson 11

The Iterator Protocol — iter and next

Lesson 11

The Iterator Protocol — iter and next

Lesson 12

Custom Iterators — Making Your Own

Lesson 12

Custom Iterators — Making Your Own

Lesson 13

What Generators Are — The yield Keyword

Lesson 13

What Generators Are — The yield Keyword

Lesson 14

Generator Functions — Replacing Iterator Classes

Lesson 14

Generator Functions — Replacing Iterator Classes

Lesson 15

Generator Expressions — Lazy Comprehensions

Lesson 15

Generator Expressions — Lazy Comprehensions

Lesson 16

yield from — Delegating to Sub-Generators

Lesson 16

yield from — Delegating to Sub-Generators

Lesson 17

Infinite Generators — Generating Without End

Lesson 17

Infinite Generators — Generating Without End

Lesson 18

Generator Pipelines — Chaining Processing Steps

Lesson 18

Generator Pipelines — Chaining Processing Steps

Lesson 19

send() and Two-Way Communication

Lesson 19

send() and Two-Way Communication

Lesson 20

Milestone: Transaction Stream Processor

Lesson 20

Milestone: Transaction Stream Processor

Lesson 21

How 'with' Works — The Context Manager Protocol

Lesson 21

How 'with' Works — The Context Manager Protocol

Lesson 22

Writing Your Own — Class-Based Context Managers

Lesson 22

Writing Your Own — Class-Based Context Managers

Lesson 23

@contextmanager — The Elegant Way

Lesson 23

@contextmanager — The Elegant Way

Lesson 24

Error Handling in Context Managers — Suppress, Transform, Log

Lesson 24

Error Handling in Context Managers — Suppress, Transform, Log

Lesson 25

contextlib Tools — suppress, redirect_stdout, nullcontext

Lesson 25

contextlib Tools — suppress, redirect_stdout, nullcontext

Lesson 26

Nested Context Managers — Multiple 'with' Resources

Lesson 26

Nested Context Managers — Multiple 'with' Resources

Lesson 27

ExitStack — Dynamic Context Management

Lesson 27

ExitStack — Dynamic Context Management

Lesson 28

Database Connection Context Manager

Lesson 28

Database Connection Context Manager

Lesson 29

API Session Context Manager

Lesson 29

API Session Context Manager

Lesson 30

Milestone: Resource Manager Suite

Lesson 30

Milestone: Resource Manager Suite

Lesson 31

What Regular Expressions Are — The Basics

Lesson 31

What Regular Expressions Are — The Basics

Lesson 32

Character Classes and Quantifiers

Lesson 32

Character Classes and Quantifiers

Lesson 33

Groups and Capturing — Extracting Parts of Matches

Lesson 33

Groups and Capturing — Extracting Parts of Matches

Lesson 34

Anchors and Boundaries — ^ $ \b

Lesson 34

Anchors and Boundaries — ^ $ \b

Lesson 35

Special Sequences — \d \w \s and Their Capitals

Lesson 35

Special Sequences — \d \w \s and Their Capitals

Lesson 36

Lookahead and Lookbehind — Zero-Width Assertions

Lesson 36

Lookahead and Lookbehind — Zero-Width Assertions

Lesson 37

re.sub() and re.subn() — Find and Replace with Power

Lesson 37

re.sub() and re.subn() — Find and Replace with Power

Lesson 38

Compiling Patterns — re.compile() for Performance

Lesson 38

Compiling Patterns — re.compile() for Performance

Lesson 39

Parsing Bank Statements — Real-World Regex

Lesson 39

Parsing Bank Statements — Real-World Regex

Lesson 40

Milestone: Bank Statement Parser

Lesson 40

Milestone: Bank Statement Parser

Lesson 41

HTTP Basics — How the Web Works

Lesson 41

HTTP Basics — How the Web Works

Lesson 42

The requests Library — Making HTTP Requests

Lesson 42

The requests Library — Making HTTP Requests

Lesson 43

Query Parameters and Headers

Lesson 43

Query Parameters and Headers

Lesson 44

Handling API Errors — Status Codes and Exceptions

Lesson 44

Handling API Errors — Status Codes and Exceptions

Lesson 45

API Authentication — Keys, Tokens, and Secrets Management

Lesson 45

API Authentication — Keys, Tokens, and Secrets Management

Lesson 46

Parsing JSON Responses — Navigating Nested API Data

Lesson 46

Parsing JSON Responses — Navigating Nested API Data

Lesson 47

Rate Limiting and Retries — Being a Good API Citizen

Lesson 47

Rate Limiting and Retries — Being a Good API Citizen

Lesson 48

Building an API Client Class

Lesson 48

Building an API Client Class

Lesson 49

Exchange Rate API — Live Currency Conversion

Lesson 49

Exchange Rate API — Live Currency Conversion

Lesson 50

Milestone: Live Budget Dashboard Data

Lesson 50

Milestone: Live Budget Dashboard Data

Lesson 51

Functions as Values — The Functional Mindset

Lesson 51

Functions as Values — The Functional Mindset

Lesson 52

map(), filter(), and reduce() — Transforming Collections

Lesson 52

map(), filter(), and reduce() — Transforming Collections

Lesson 53

functools — partial, lru_cache, and More

Lesson 53

functools — partial, lru_cache, and More

Lesson 54

Function Pipelines — Composing Transformations

Lesson 54

Function Pipelines — Composing Transformations

Lesson 55

Closures — Functions That Remember

Lesson 55

Closures — Functions That Remember

Lesson 56

itertools in Functional Pipelines

Lesson 56

itertools in Functional Pipelines

Lesson 57

Immutability and Pure Functions — Reliable by Design

Lesson 57

Immutability and Pure Functions — Reliable by Design

Lesson 58

Functional Analytics Engine

Lesson 58

Functional Analytics Engine

Lesson 59

Comprehensions Mastery — Dict, Set, and Nested

Lesson 59

Comprehensions Mastery — Dict, Set, and Nested

Lesson 60

Milestone: Budget Analytics Pipeline

Lesson 60

Milestone: Budget Analytics Pipeline

Lesson 61

pathlib — The Modern Way to Work with Files

Lesson 61

pathlib — The Modern Way to Work with Files

Lesson 62

Reading and Writing Files — JSON, CSV, and Safe I/O

Lesson 62

Reading and Writing Files — JSON, CSV, and Safe I/O

Lesson 63

Configuration Files — configparser and YAML

Lesson 63

Configuration Files — configparser and YAML

Lesson 64

The logging Module — Professional Application Logging

Lesson 64

The logging Module — Professional Application Logging

Lesson 65

pickle and SQLite — Persisting Complex Data

Lesson 65

pickle and SQLite — Persisting Complex Data

Lesson 66

Watching Files — Detecting Changes on Disk

Lesson 66

Watching Files — Detecting Changes on Disk

Lesson 67

Data Export — Reports, Tables, and Formatted Output

Lesson 67

Data Export — Reports, Tables, and Formatted Output

Lesson 68

tempfile and os — Safe Temporary Files and OS Interaction

Lesson 68

tempfile and os — Safe Temporary Files and OS Interaction

Lesson 69

The File Manager — Coordinating the Persistence Layer

Lesson 69

The File Manager — Coordinating the Persistence Layer

Lesson 70

Mini Project: Transaction Import & Export Wizard

Lesson 70

Mini Project: Transaction Import & Export Wizard

Lesson 71

Threading — Running Tasks in Parallel

Lesson 71

Threading — Running Tasks in Parallel

Lesson 72

Thread Safety — Locks, Queues, and Shared State

Lesson 72

Thread Safety — Locks, Queues, and Shared State

Lesson 73

Async/Await Fundamentals — Cooperative Concurrency

Lesson 73

Async/Await Fundamentals — Cooperative Concurrency

Lesson 74

aiohttp — Async HTTP Requests

Lesson 74

aiohttp — Async HTTP Requests

Lesson 75

Background Tasks — Scheduling, Caching, and Async Patterns

Lesson 75

Background Tasks — Scheduling, Caching, and Async Patterns

Lesson 76

Async Database Access — SQLite and asyncio

Lesson 76

Async Database Access — SQLite and asyncio

Lesson 77

Async Streams and Generators — Processing Data as It Arrives

Lesson 77

Async Streams and Generators — Processing Data as It Arrives

Lesson 78

Mixing Threading and Async — The Complete Concurrency Picture

Lesson 78

Mixing Threading and Async — The Complete Concurrency Picture

Lesson 79

Async Context Managers and Decorators — Production Patterns

Lesson 79

Async Context Managers and Decorators — Production Patterns

Lesson 80

Mini Project: Async Budget Sync Engine

Lesson 80

Mini Project: Async Budget Sync Engine

Lesson 81

unittest — Python's Built-In Testing Framework

Lesson 81

unittest — Python's Built-In Testing Framework

Lesson 82

pytest — The Modern Testing Standard

Lesson 82

pytest — The Modern Testing Standard

Lesson 83

Mocking — Testing in Isolation

Lesson 83

Mocking — Testing in Isolation

Lesson 84

Code Coverage and Test Quality

Lesson 84

Code Coverage and Test Quality

Lesson 85

Type Hints and mypy — Static Type Checking

Lesson 85

Type Hints and mypy — Static Type Checking

Lesson 86

Advanced dataclasses — Validation, Inheritance, and Slots

Lesson 86

Advanced dataclasses — Validation, Inheritance, and Slots

Lesson 87

Error Handling Patterns — Exceptions, Results, and Resilience

Lesson 87

Error Handling Patterns — Exceptions, Results, and Resilience

Lesson 88

Code Quality Tools — Linting, Formatting, and Pre-commit

Lesson 88

Code Quality Tools — Linting, Formatting, and Pre-commit

Lesson 89

Integration Testing — Testing Components Together

Lesson 89

Integration Testing — Testing Components Together

Lesson 90

Mini Project: Complete Test Suite for the Budget Dashboard

Lesson 90

Mini Project: Complete Test Suite for the Budget Dashboard

Lesson 91

argparse — Building Professional Command-Line Interfaces

Lesson 91

argparse — Building Professional Command-Line Interfaces

Lesson 92

rich — Beautiful Terminal Output

Lesson 92

rich — Beautiful Terminal Output

Lesson 93

Click — The Decorator-Based CLI Framework

Lesson 93

Click — The Decorator-Based CLI Framework

Lesson 94

Packaging — pyproject.toml, Entry Points, and pip install

Lesson 94

Packaging — pyproject.toml, Entry Points, and pip install

Lesson 95

Environment Management — venv, pip-tools, and Reproducible Installs

Lesson 95

Environment Management — venv, pip-tools, and Reproducible Installs

Lesson 96

Building the CLI App — Import and Config Commands

Lesson 96

Building the CLI App — Import and Config Commands

Lesson 97

Building the CLI App — Report and Summary Commands

Lesson 97

Building the CLI App — Report and Summary Commands

Lesson 98

Building the CLI App — Alerts, Budgets, and Live Monitoring

Lesson 98

Building the CLI App — Alerts, Budgets, and Live Monitoring

Lesson 99

Building the CLI App — Shell Completion and Polish

Lesson 99

Building the CLI App — Shell Completion and Polish

100

Lesson 100

Capstone: The Complete Budget Dashboard Application

Lesson 100

Intermediate Tier

Functions Are Objects — First-Class Functions

Functions Are Objects — First-Class Functions

Closures — Functions That Remember

Closures — Functions That Remember

Your First Decorator — The Basic Pattern

Your First Decorator — The Basic Pattern

@functools.wraps — Preserving Function Identity

@functools.wraps — Preserving Function Identity

Decorator Arguments — Parameterised Decorators

Decorator Arguments — Parameterised Decorators

Stacking Decorators — Multiple Decorators on One Function

Stacking Decorators — Multiple Decorators on One Function

Class-Based Decorators — Using __call__

Class-Based Decorators — Using __call__

Real-World Patterns — @retry, @timer, @cache

Real-World Patterns — @retry, @timer, @cache

Decorators in Practice — @validate, @log_calls, @require_auth

Decorators in Practice — @validate, @log_calls, @require_auth

Milestone: Decorator Toolkit — The Budget Dashboard's Engine

Milestone: Decorator Toolkit — The Budget Dashboard's Engine

The Iterator Protocol — __iter__ and __next__

The Iterator Protocol — __iter__ and __next__

Custom Iterators — Making Your Own

Custom Iterators — Making Your Own

What Generators Are — The yield Keyword

What Generators Are — The yield Keyword

Generator Functions — Replacing Iterator Classes

Generator Functions — Replacing Iterator Classes

Generator Expressions — Lazy Comprehensions

Generator Expressions — Lazy Comprehensions

yield from — Delegating to Sub-Generators

yield from — Delegating to Sub-Generators

Infinite Generators — Generating Without End

Infinite Generators — Generating Without End

Generator Pipelines — Chaining Processing Steps

Generator Pipelines — Chaining Processing Steps

send() and Two-Way Communication

send() and Two-Way Communication

Milestone: Transaction Stream Processor

Milestone: Transaction Stream Processor

How 'with' Works — The Context Manager Protocol

How 'with' Works — The Context Manager Protocol

Writing Your Own — Class-Based Context Managers

Writing Your Own — Class-Based Context Managers

@contextmanager — The Elegant Way

@contextmanager — The Elegant Way

Error Handling in Context Managers — Suppress, Transform, Log

Error Handling in Context Managers — Suppress, Transform, Log

contextlib Tools — suppress, redirect_stdout, nullcontext

contextlib Tools — suppress, redirect_stdout, nullcontext

Nested Context Managers — Multiple 'with' Resources

Nested Context Managers — Multiple 'with' Resources

ExitStack — Dynamic Context Management

ExitStack — Dynamic Context Management

Database Connection Context Manager

Database Connection Context Manager

API Session Context Manager

API Session Context Manager

Milestone: Resource Manager Suite

Milestone: Resource Manager Suite

What Regular Expressions Are — The Basics

What Regular Expressions Are — The Basics

Character Classes and Quantifiers

Character Classes and Quantifiers

Groups and Capturing — Extracting Parts of Matches

Groups and Capturing — Extracting Parts of Matches

Anchors and Boundaries — ^ $ \b

Anchors and Boundaries — ^ $ \b

Special Sequences — \d \w \s and Their Capitals

Special Sequences — \d \w \s and Their Capitals

Lookahead and Lookbehind — Zero-Width Assertions

Lookahead and Lookbehind — Zero-Width Assertions

re.sub() and re.subn() — Find and Replace with Power

re.sub() and re.subn() — Find and Replace with Power

Compiling Patterns — re.compile() for Performance

Compiling Patterns — re.compile() for Performance

Parsing Bank Statements — Real-World Regex

Parsing Bank Statements — Real-World Regex

Milestone: Bank Statement Parser

Class-Based Decorators — Using call

Class-Based Decorators — Using call

The Iterator Protocol — iter and next

The Iterator Protocol — iter and next