What Python features are introduced at each level. Use this to see what is expected of you and what tools you have available.
Level 00 -- Absolute Beginner (no imports, no tests)
Feature
First Project
print()01 First Steps
input()03 User Input
Variables, =
04 Variables
Integers, +, -, *, /, //, %
05 Numbers and Math
Strings, f-strings
06 Strings and Text
if / elif / else08 Making Decisions
Lists, indexing, .append()
09 Lists
for loops, range()10 For Loops
while loops11 While Loops
Dictionaries, key-value pairs
12 Dictionaries
def, return13 Functions
open(), .read(), .strip()14 Reading Files
Level 0 -- Beginner (pytest and ruff start here)
Feature
First Project
Functions with parameters and return values
02 Calculator Basics
if/elif/else branching04 Yes No Questionnaire
for / while with logic05 Number Classifier
File reading and writing (open, with)
07 First File Reader
String methods (.split(), .strip(), .lower())
08 String Cleaner Starter
Lists and iteration patterns
09 Daily Checklist Writer
Dictionaries for lookup/counting
10 Duplicate Line Finder
pytest (test discovery, assertions)All projects
ruff (linting)All projects
Level 1 -- String Methods, CSV, JSON, pathlib
Feature
First Project
Input validation patterns
01 Input Validator Lab
String method chaining
02 Password Strength Checker
csv module05 CSV First Reader
json module09 JSON Settings Loader
pathlib.Path08 Path Exists Checker
argparse11 Command Dispatcher
datetime07 Date Difference Helper
Multi-file projects
15 Level1 Mini Toolkit
Level 2 -- Nested Data, Comprehensions, Error Handling
Feature
First Project
Nested dicts and lists
01 Dictionary Lookup Service
Data flattening
02 Nested Data Flattener
try / except / finally04 Error Safe Divider
Dict and list comprehensions
05 Comprehension Drills
Sets and set operations
06 Set Intersection Report
Multiple exception types
11 Retry Loop Practice
collections.Counter12 Multi File Stats Aggregator
Project structure (src/, tests/)
15 Level2 Mini Capstone
Level 3 -- Packages, Logging, Refactoring
Feature
First Project
pip install, third-party packages01 First Package Install
logging module02 Logger Config Lab
pytest parametrize, fixtures03 Parameterized Test Writer
Code refactoring patterns
04 Function Extraction Exercise
__name__ == "__main__" pattern05 Module Runner Pattern
Configuration files (INI, YAML)
09 Config Merge Tool
Package boundaries
10 Dependency Boundary Lab
Level 4 -- Data Validation, File Operations
Feature
First Project
Schema validation
01 Schema Validator Intro
Data cleaning pipelines
02 Field Normalizer
File backup and rotation
04 Backup Rotation Manager
Regex basics (re module)
05 Regex Practice Set
CSV transformation
07 Csv Transform Pipeline
Checksums and hashing
09 Checksum File Verifier
Batch file processing
12 Bulk File Renamer
Level 5 -- Scheduling, Monitoring, ETL
Feature
First Project
schedule library01 Cron Style Scheduler
Environment variables
02 Environment Config Loader
ETL (Extract, Transform, Load)
03 Etl Pipeline Starter
Template rendering (Jinja2)
05 Template Report Builder
Multi-layer configuration
07 Config Layer Stack
Polling patterns
10 API Polling Simulator
Metric collection
11 Metric Aggregation Engine
Level 6 -- SQL, Databases, Transactions
Feature
First Project
sqlite301 Sqlite Hello World
SQL: SELECT, INSERT, UPDATE, DELETE
02 Crud Operations Lab
Joins and relationships
03 Join Query Builder
Transactions and rollback
05 Transaction Rollback Lab
Database migrations
06 Schema Migration Runner
Idempotent operations
07 Idempotent Upsert Drill
Connection pooling
09 Connection Pool Monitor
Level 7 -- APIs, Caching, Observability
Feature
First Project
requests library (advanced)01 Api Response Validator
Rate limiting
02 Rate Limit Handler
Caching strategies
03 Cache Invalidation Lab
Token-based auth
05 Token Refresh Handler
Webhook patterns
06 Webhook Receiver Stub
Structured logging
07 Structured Log Formatter
Observability metrics
08 Ingestion Observability Kit
Level 8 -- Dashboards, Concurrency, Profiling
Feature
First Project
Dashboard data assembly
01 Dashboard Data Assembler
Query caching
02 Query Cache Layer
Pagination
03 Pagination Stress Lab
concurrent.futures07 Concurrent Refresh Scheduler
Fault injection testing
08 Fault Injection Harness
cProfile, profiling09 Profile Guided Optimization
Snapshot testing
11 Snapshot Regression Guard
Level 9 -- Architecture, Events, SLOs
Feature
First Project
Event-driven architecture
01 Event Bus Prototype
Domain-driven design concepts
02 Domain Model Boundary Lab
SLO (Service Level Objectives)
03 Slo Budget Tracker
Feature flags
04 Feature Flag Gate
Capacity planning
05 Capacity Forecast Model
Dependency graphs
06 Dependency Graph Walker
Change management
08 Change Impact Analyzer
Level 10 -- Enterprise Patterns
Feature
First Project
Enterprise architecture
01 Enterprise Python Blueprint
Orchestration patterns
02 Autonomous Run Orchestrator
Policy-as-code
03 Policy As Code Validator
Multi-tenancy
04 Multi Tenant Data Guard
Compliance automation
05 Compliance Evidence Builder
Chaos engineering
06 Resilience Chaos Workbench
Zero-downtime migrations
08 Zero Downtime Migration Lab
Key Standard Library Modules by Level
Level
Modules
00
(none -- built-ins only)
0
os, sys
1
csv, json, pathlib, argparse, datetime
2
collections, itertools
3
logging, configparser, unittest
4
re, hashlib, shutil, glob
5
sched, string, textwrap
6
sqlite3
7
http.server, urllib
8
concurrent.futures, cProfile, timeit
9
abc, dataclasses, functools
10
typing, contextlib, importlib
Key Third-Party Packages by Level
Level
Packages
0-2
pytest, ruff, black
3
pyyaml, toml
4
pydantic
5
schedule, jinja2, python-dotenv
6
sqlalchemy, alembic
7
requests, httpx, structlog
8
matplotlib, rich
9
click, typer
10
(all of the above combined)
Module
Key Packages
01 Web Scraping
requests, beautifulsoup4
02 CLI Tools
click, typer, rich
03 REST APIs
requests, httpx
04 FastAPI Web
fastapi, uvicorn, pydantic
05 Async Python
asyncio, aiohttp
06 Databases & ORM
sqlalchemy, alembic
07 Data Analysis
pandas, matplotlib
08 Advanced Testing
pytest, hypothesis, responses
09 Docker Deployment
docker, docker-compose
10 Django Fullstack
django, djangorestframework
11 Package Publishing
build, twine, setuptools
12 Cloud Deploy
gunicorn, psycopg2