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Python: Build Reliable Programs
Develop Python fluency through clear language foundations, practical data work, files, exceptions, models, and a tested project structure.
10 lessons About 9 hours Editable examples
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COURSE CONTENTS
Learn one focused topic at a time.
01
Python Foundations
Python IntroductionSet up and run a Python file, trace values through a small program, format output, and diagnose the first common errors.
45 min Values, Variables, and TypesUnderstand how Python names refer to typed values, convert and validate external text, model absence with None, and communicate contracts with type hints.
55 min Conditions and IterationWrite clear branches, for loops, ranges, enumeration, and guard clauses.
38 min Functions, Scope, and ContractsDesign focused functions with parameters, return values, defaults, scope, argument unpacking, and explicit error behavior.
55 min 02
Collections and Files
Lists, Tuples, and ComprehensionsChoose mutable and immutable sequences, copy and sort safely, unpack values, and transform data with readable comprehensions.
60 min Dictionaries and SetsModel keyed records, required and optional fields, counters, merges, uniqueness, and group relationships.
60 min Strings, Paths, and FilesProcess Unicode text, encodings, safe paths, and structured files with explicit, reliable boundaries.
65 min 03
Reliable Python Programs
Exceptions and ModulesTrace, raise, recover, and chain failures precisely while organizing reusable modules and package entry points.
65 min Classes and Data ModelsModel validated objects with data classes, properties, composition, explicit identity, and honest inheritance contracts.
65 min Testing and a Complete ProjectDesign behavior-focused tests, isolate external effects, structure a complete application, and automate repeatable quality checks.
70 min 
COURSE COMPANION
Take Python beyond the lesson.
Write Python programs that are easier to understand, test, and extend—from first values and functions to files, errors, and real projects.