Python tempfile Module: Temporary Files and Directories
Create temporary files and directories safely with Python tempfile, including NamedTemporaryFile, TemporaryDirectory, cleanup, and permissions.
Tutorials
Browse Python tutorials for beginners and working developers, including syntax, libraries, examples, projects, and real problem-solving guides.
sep in Python: print() Separators, Tabs, and CSV Output
Use sep in Python print() to control spaces, tabs, newlines, CSV-style output, and when join() is better.
FizzBuzz in Python: Clear Solutions and Common Variations
Write FizzBuzz in Python with readable condition order, modulo tests, range boundaries, reusable functions, and testable output.
Python dateutil: Parse Dates, Time Zones, and Relative Time
Parse flexible input, keep datetimes timezone-aware, and choose dateutil.parser, tz, or relativedelta for the job.
Build a Python Hangman Game: Input, State, and Validation
Build a Python Hangman game with random word selection, input validation, guessed-letter state, win conditions, and safe replay logic.
Get a Filename from a Path in Python: pathlib and os.path
Get a filename, stem, suffix, or parent directory from a Python path with pathlib and os.path, including edge cases.
Python MD5 with hashlib: Checksums, Compatibility, and Security
MD5 can identify accidental changes or legacy formats, but it is not safe for passwords, signatures, or adversarial integrity checks.
How to Negate a Boolean in Python: not, Conditions, and Flags
Negate Python booleans with not, invert conditions, toggle flags, handle truthy values, and avoid double-negative logic mistakes.
Check if a Variable Exists in Python: locals, globals, and NameError
Check whether a Python name exists with locals(), globals(), try/except NameError, hasattr(), getattr(), and better initialization patterns.
Viterbi Algorithm in Python: Dynamic Programming and Backpointers
Implement the Viterbi algorithm in Python with dynamic-programming scores, backpointers, hidden states, probabilities, and stable computation.