Python Logging: Levels, Handlers, Formatters, and Best Practices
Build reliable Python logging with named loggers, levels, handlers, formatters, exception tracebacks, and safe configuration for scripts and services.
Tutorials
Browse Python tutorials for beginners and working developers, including syntax, libraries, examples, projects, and real problem-solving guides.
shutil.move() in Python: Move Files, Folders, and Safely
Learn how shutil.move() handles files, directories, destinations, overwrites, cross-filesystem moves, and predictable error handling.
Python itemgetter: Sort and Extract Values from Records
Use operator.itemgetter in Python to extract fields, sort dictionaries or tuples, build multi-key orderings, and handle missing keys deliberately.
itertools.groupby in Python: Group Consecutive Records
Use Python itertools.groupby correctly by sorting or pre-grouping records, selecting keys, consuming each group, and avoiding iterator surprises.
shutil.rmtree(): Delete a Directory Tree Safely
Delete a directory tree with shutil.rmtree() only after validating the target, previewing its contents, and handling cleanup errors.
Python math.pi: Circle Formulas and Examples
Use math.pi for accurate circle calculations and radians in Python, with examples for area, circumference, tau, and trigonometry.
itertools.islice(): Lazily Slice Python Iterators and Generators
Use itertools.islice() to lazily take ranges from iterators, generators, files, and streams without building a full list in memory.
Python itertools.product(): Cartesian Product Guide
Learn itertools.product() with Cartesian combinations, repeat, lazy iteration, filtering, and practical guidance for avoiding huge lists.
Python os.path.basename(): Files, Trailing Slashes, and pathlib
Use Python os.path.basename() for final path components, handle trailing separators, compare pathlib.Path.name, and split extensions safely.
Python unittest assertEqual(): Expected vs Actual Values
Write clearer Python unit tests with assertEqual by comparing expected first, choosing the narrowest assertion, and diagnosing failures.