Python - from None to AI

License
Install
Python Versions
Python History
Links
References

Basics

1. About
2. Introduction
3. Syntax
4. Numeric
5. Logic
6. Strings
7. Iterables
8. Mappings
9. Nested
10. Unpack
11. Conditional
12. While
13. For
14. Comprehensions
15. Files
16. Functions
17. Exceptions
18. Idiom
19. OOP
20. Modules
21. Recap

Intermediate

1. About
2. String
3. Syntax
4. Star
5. Enum
6. Match
7. Regex
8. Datetime
9. Generators
10. Iterator
11. Pathlib
12. Logging
13. Modules
14. Locale
15. Serialization
16. Pickle
17. TOML
18. CSV
19. JSON
20. Typing
21. Dataclass

Advanced

1. About
2. Syntax
3. OOP Paradigm
4. OOP Inheritance
5. OOP Polymorphism
6. OOP Encapsulation
7. OOP Metaprogramming
8. OOP Operator
9. FP Paradigm
10. FP Apply
11. Decorators
12. Async Paradigm
13. Async AsyncIO

Concurrency

1. About
2. Multiprocessing
3. Threading
4. Async Paradigm
5. Async AsyncIO

Performance

1. About
2. Introduction
3. Transpilation
4. Tools
5. Profiling
6. Optimization
7. Extensions

Testing

1. About
2. Introduction
3. Random
4. Syntax
5. Doctest
6. Unittest
7. Recap

CI/CD

1. About
2. DevTools
3. Distribute
4. Lint
5. Quality
6. Security

DevOps

1. About
2. Quality
3. Tests
4. Debugging

Database

1. About
2. Theory
3. ORM
4. Normalization
5. NoSQL
6. SQL
7. SQLite3
8. SQLAlchemy
9. Case Study

Design Patterns

1. About
2. Introduction
3. UML
4. Creational
5. Behavioral
6. Structural
7. Functional

Numpy

1. About
2. Introduction
3. Array
4. Attributes
5. Random
6. Indexing
7. Operations
8. Methods
9. Statistics
10. Math
11. Polynomial

Pandas

1. About
2. Introduction
3. Read
4. To
5. Series
6. DataFrame
7. Date
8. Recap
9. Case Study

Matplotlib

1. About
2. Introduction
3. Figure
4. Style
5. Chart
6. Case Study

Stdlib

1. Modules
2. Collections
3. Math
4. XML
5. Operating System
6. String
7. Builtin
8. Type
9. Loop
10. TkInter

Network

1. About
2. Protocol
3. Web
4. Transport
5. Case Study

webapp

1. About
2. HTTP
3. REST
4. Architecture
5. Auth

Django

1. About
2. Introduction
3. Setup
4. Settings
5. Models
6. Data
7. Admin
8. ORM
9. Views
10. Templates
11. Templatetags
12. Forms
13. Manage
14. Middleware
15. Locale
16. Utils
17. Auth
18. API
19. Ninja
20. Tests
21. Apps
22. Deploy

FastAPI

1. About
2. Introduction
3. FastAPI
4. Pydantic
5. Database
6. Auth
7. DevOps
8. Case Study

Data Science

1. About
2. Jupyter
3. Python
4. Visualization
5. Scipy
6. Geopandas

Machine Learning

1. About
2. Introduction
3. Sklearn
4. Model Quality
5. Decision Trees
6. Regressions
7. K-Nearest Neighbors
8. Bayes
9. Support Vector Machines
10. Clustering
11. Neural Networks
12. References
13. Articles

Artificial Intelligence

1. About
2. Introduction

OOP

1. Paradigm
2. Python

Dragon

1. English
2. Polish
3. ADR

Python - from None to AI

1. About
6.22. DataFrame MultiIndex

6.22. DataFrame MultiIndex

6.22.1. MultiIndex Creation

6.22.2. Cross Section

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© Copyright 2026, Matt Harasymczuk <matt@python3.info>, last update: 2026-06-09.