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1024 lessons Β· 10 tracks Β· 18 languages
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Python FoundationsL1Β· 170 lessons
From zero to confident with Python basics
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AI Engineering with PythonL3PROΒ· 101 lessons
Build with Claude & LLM APIs like the US dev community does
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⚑
FastAPI ProductionL3PROΒ· 101 lessons
REST APIs the way US startups ship them
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Data Science AppliedL3PROΒ· 100 lessons
pandas, polars, real datasets, dashboards
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System Design for Python JuniorsL4PROΒ· 101 lessons
What FAANG-tier interviews actually ask
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🧠
Senior Deep-DivesL5PROΒ· 101 lessons
asyncio internals, GIL, typing tricks, Rust extensions
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🎯
Interview PrepL3PROΒ· 100 lessons
LeetCode patterns in Python + behavioral STAR
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DevOps for Python servicesL4PROΒ· 100 lessons
Docker, CI/CD, observability, deploys, incident response
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Python for Office WorkersL2PROΒ· 50 lessons
Excel, Google Sheets, scraping β€” automate the boring parts of your job
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🎨
Creative ChallengesL3PROΒ· 100 lessons
10 unique formats nobody else teaches
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🎁 Free bonus after sign-up β€” Frontend basics
HTML 91 Β· CSS 109 Β· JS 40 lessons unlock when you create an account. Designed so you understand how your Python backend pairs with the browser.
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First β€” basics primer (8 cards)
() [] {} " ' : = == β€” terms you should know
β†’
Module 1Free: 1–15

Python Basics

From zero to first project

0/170
lessons
Progress0%
1
Hello, World!Write
+75 XPSTART
2
VariablesFill
+60 XPSTART
3
Data typesQuiz
+75 XPSTART
4
StringsWrite
+75 XPSTART
5
Numbers and mathWrite
+75 XPSTART
6
User inputWrite
+75 XPSTART
7
Currency converterScenario
+100 XPSTART
8
if / else conditionsFill
+60 XPSTART
9
Find the bug in the ifFix
+75 XPSTART
10
Even or oddWrite
+75 XPSTART
11
Grade calculatorScenario
+100 XPSTART
12
for loopsFill
+60 XPSTART
13
while loopsFix
+75 XPSTART
14
FizzBuzzWrite
+100 XPSTART
15
Shopping listWrite
+75 XPSTART
16
Contacts dictWrite
+75 XPπŸ”’
17
Greeting functionWrite
+75 XPπŸ”’
18
Predict the outputPredict
+75 XPπŸ”’
19
List comprehensionsWrite
+100 XPπŸ”’
20
Guess the numberMission
+200 XPπŸ”’
21
Predict: print with commaPredict
+75 XPπŸ”’
22
Predict: mathPredict
+75 XPπŸ”’
23
Predict: for loopPredict
+75 XPπŸ”’
24
Predict: f-string + variablesPredict
+75 XPπŸ”’
25
List & append β€” write codeWrite
+75 XPπŸ”’
26
Quiz: which type is immutable?Quiz
+60 XPπŸ”’
27
Quiz: what does len() return?Quiz
+60 XPπŸ”’
28
Division // and % β€” write codeWrite
+75 XPπŸ”’
29
Quiz: comments in PythonQuiz
+60 XPπŸ”’
30
Quiz: what does a function without return return?Quiz
+60 XPπŸ”’
31
Double a numberWrite
+75 XPπŸ”’
32
Maximum of threeWrite
+75 XPπŸ”’
33
Reverse a stringWrite
+75 XPπŸ”’
34
Sum of a listWrite
+75 XPπŸ”’
35
Count vowelsWrite
+100 XPπŸ”’
36
Predict: `in` operator on stringsPredict
+75 XPπŸ”’
37
Quiz: how do str and int differ?Quiz
+60 XPπŸ”’
35.5
🎯 Mini-project: Guess the numberMission
+200 XPπŸ”’
38
Predict: conditions with and/orPredict
+75 XPπŸ”’
39
Find the bug: loopFix
+75 XPπŸ”’
40
Fill in: nested loopFill
+100 XPπŸ”’
41
Default parametersWrite
+75 XPπŸ”’
42
Predict: variable scopePredict
+75 XPπŸ”’
43
Find the bug: forgotten returnFix
+75 XPπŸ”’
44
Quiz: what does .lower() return?Quiz
+60 XPπŸ”’
45
Fill in: lambdaFill
+100 XPπŸ”’
46
Replace a wordWrite
+75 XPπŸ”’
47
Split a sentenceWrite
+75 XPπŸ”’
48
Predict: slice [::-1]Predict
+75 XPπŸ”’
49
Quiz: which method strips whitespace?Quiz
+60 XPπŸ”’
50
Capitalise words in a titleWrite
+75 XPπŸ”’
50.5
🎯 Mini-project: Word frequency counterMission
+200 XPπŸ”’
51
try / except β€” catch the errorWrite
+75 XPπŸ”’
52
Find the bug: int() on a stringFix
+75 XPπŸ”’
53
Quiz: what error fires on a missing dict key?Quiz
+60 XPπŸ”’
54
Predict: try / finallyPredict
+75 XPπŸ”’
55
Safe number parsingWrite
+100 XPπŸ”’
56
Find the max in a listScenario
+100 XPπŸ”’
57
Filter: only evensScenario
+100 XPπŸ”’
58
Count words in textScenario
+100 XPπŸ”’
59
Mini calculatorScenario
+125 XPπŸ”’
60
FINAL: TODO-list mini-projectMission
+200 XPπŸ”’
61
List comprehensionsWrite
+100 XPπŸ”’
62
Dict comprehensionsWrite
+100 XPπŸ”’
63
enumerate()Write
+75 XPπŸ”’
64
zip()Write
+75 XPπŸ”’
65
*args β€” variable argumentsWrite
+100 XPπŸ”’
66
**kwargs β€” keyword argumentsWrite
+100 XPπŸ”’
67
Lambda functionsWrite
+75 XPπŸ”’
68
sorted() with key=Write
+100 XPπŸ”’
69
Predict: map and filter chainedPredict
+75 XPπŸ”’
70
F-strings: formatting deep diveWrite
+75 XPπŸ”’
71
String split() and join()Write
+75 XPπŸ”’
72
String strip() and replace()Write
+75 XPπŸ”’
73
Scenario: process a CSV export at midnightScenario
+125 XPπŸ”’
74
Scenario: parse a webhook payloadScenario
+125 XPπŸ”’
75
Fix: bare except swallows real bugsFix
+100 XPπŸ”’
75.5
🎯 Mini-project: Calculator with historyMission
+200 XPπŸ”’
76
Scenario: validate user age at signupScenario
+125 XPπŸ”’
77
Fix: a wrong type hint that mypy would catchFix
+100 XPπŸ”’
78
Predict: list slicing tricksPredict
+75 XPπŸ”’
79
Counter from collectionsWrite
+100 XPπŸ”’
80
Set operationsWrite
+100 XPπŸ”’
81
Classes: defining your own typeWrite
+100 XPπŸ”’
82
Class methods and static methodsWrite
+100 XPπŸ”’
83
InheritanceWrite
+100 XPπŸ”’
84
super(): calling the parentWrite
+100 XPπŸ”’
85
Magic methods: __str__ and __eq__Write
+100 XPπŸ”’
86
Properties with @propertyWrite
+100 XPπŸ”’
87
Class vs instance variablesWrite
+100 XPπŸ”’
88
isinstance and type checksWrite
+75 XPπŸ”’
89
Generators with yieldWrite
+125 XPπŸ”’
90
Generator expressionsWrite
+100 XPπŸ”’
91
DecoratorsWrite
+125 XPπŸ”’
92
ClosuresWrite
+100 XPπŸ”’
93
Context managers (with)Write
+100 XPπŸ”’
94
Regex basics with reWrite
+100 XPπŸ”’
95
datetime: working with datesWrite
+100 XPπŸ”’
95.5
🎯 Mini-project: JSON β†’ CSV converterMission
+200 XPπŸ”’
96
pathlib for filesPredict
+100 XPπŸ”’
97
defaultdictWrite
+100 XPπŸ”’
98
namedtupleWrite
+75 XPπŸ”’
99
DataclassesWrite
+100 XPπŸ”’
100
MILESTONE: build a Library systemMission
+250 XPπŸ”’
101
functools.lru_cacheWrite
+100 XPπŸ”’
102
functools.partialWrite
+75 XPπŸ”’
103
itertools.chain and productWrite
+75 XPπŸ”’
104
Enum.EnumWrite
+75 XPπŸ”’
105
Logging basicsPredict
+100 XPπŸ”’
106
Ternary expressionsWrite
+75 XPπŸ”’
107
Walrus operator :=Write
+75 XPπŸ”’
108
Tuple unpacking + swapWrite
+75 XPπŸ”’
109
any() and all()Write
+75 XPπŸ”’
110
min/max with key=Write
+75 XPπŸ”’
111
is vs ==Write
+75 XPπŸ”’
112
Truthy and falsy valuesWrite
+75 XPπŸ”’
113
Mutable default args trapWrite
+100 XPπŸ”’
114
abs / round / divmodWrite
+75 XPπŸ”’
115
Conditional unpackingWrite
+75 XPπŸ”’
115.5
🎯 Mini-project: Log parserMission
+200 XPπŸ”’
116
String case methodsWrite
+75 XPπŸ”’
117
String startswith / endswithWrite
+75 XPπŸ”’
118
in operator and not inWrite
+75 XPπŸ”’
119
Dict get() with defaultWrite
+75 XPπŸ”’
120
MILESTONE: Phone book CLIMission
+250 XPπŸ”’
121
asyncio basics: async/awaitWrite
+100 XPπŸ”’
122
asyncio.run() β€” top-level entryWrite
+100 XPπŸ”’
123
asyncio.gather() for parallel coroutinesWrite
+125 XPπŸ”’
124
Predict: asyncio.sleep orderingPredict
+100 XPπŸ”’
125
async with / async forWrite
+100 XPπŸ”’
126
Threading basics β€” predict the outputPredict
+100 XPπŸ”’
127
threading.Lock β€” predict the final counterPredict
+100 XPπŸ”’
128
queue.Queue β€” producer / consumerWrite
+100 XPπŸ”’
129
multiprocessing.Pool β€” predict the outputPredict
+125 XPπŸ”’
130
ThreadPoolExecutor β€” predict the outputPredict
+100 XPπŸ”’
131
subprocess.run β€” predict the outputPredict
+100 XPπŸ”’
132
shutil copytree β€” predictPredict
+75 XPπŸ”’
133
tempfile cleanup β€” predictPredict
+75 XPπŸ”’
134
urllib status code β€” predictPredict
+75 XPπŸ”’
135
requests raise_for_status β€” predictPredict
+75 XPπŸ”’
136
timeit for micro-benchmarksWrite
+100 XPπŸ”’
137
cProfile basic profilingQuiz
+100 XPπŸ”’
138
logging vs printQuiz
+100 XPπŸ”’
139
argparse for CLI toolsQuiz
+100 XPπŸ”’
140
CAPSTONE: Parallel file downloaderMission
+250 XPπŸ”’
141
__init__ vs __new__Write
+100 XPπŸ”’
142
@property β€” computed attributesWrite
+100 XPπŸ”’
143
super() chaining in inheritanceWrite
+100 XPπŸ”’
144
Multiple inheritance and MROWrite
+100 XPπŸ”’
145
ABC β€” abstract base classesWrite
+100 XPπŸ”’
146
decimal.Decimal β€” precise arithmeticWrite
+100 XPπŸ”’
147
frozenset β€” immutable, hashable setsWrite
+100 XPπŸ”’
148
Custom exceptions + raise fromWrite
+100 XPπŸ”’
149
@contextmanager decoratorWrite
+100 XPπŸ”’
150
yield from β€” generator delegationWrite
+100 XPπŸ”’
151
collections.Counter β€” frequency countsWrite
+100 XPπŸ”’
152
functools.singledispatch β€” type-based dispatchWrite
+100 XPπŸ”’
153
Type hints β€” Optional, Union, genericsFix
+100 XPπŸ”’
154
pathlib β€” modern path handlingPredict
+100 XPπŸ”’
155
datetime arithmeticWrite
+100 XPπŸ”’
156
JSON β€” dump, load, custom encoderWrite
+100 XPπŸ”’
157
CSV with DictReader / DictWriterWrite
+100 XPπŸ”’
158
argparse mini-CLIPredict
+100 XPπŸ”’
159
logging β€” handlers, levels, formattersPredict
+75 XPπŸ”’
160
CAPSTONE: CLI todo-appMission
+200 XPπŸ”’
161
MINI: Tic-Tac-Toe β€” detect a winnerMission
+200 XPπŸ”’
162
MINI: Log parser β€” top 3 IPs by error countMission
+200 XPπŸ”’
163
MINI: Password strength validator (5-rule scoring)Mission
+200 XPπŸ”’
164
MINI: Calculator with history (last N results)Mission
+200 XPπŸ”’
165
MINI: JSON β†’ CSV converter (flatten nested dicts)Mission
+200 XPπŸ”’

Lessons 6–20 available after registration