Convert Unix Time to Datetime in Python: Time Zones and Units
Convert Unix timestamps to Python datetime values with seconds or milliseconds, UTC, time zones, validation, and daylight-saving considerations.
Tutorials
Browse Python tutorials for beginners and working developers, including syntax, libraries, examples, projects, and real problem-solving guides.
Python virtualenv Location: Find, Create, and Verify Environments
Find a Python virtualenv location with sys.prefix and pathlib, create predictable environments, verify the active interpreter, and avoid package confusion.
Tokenize a String in Python: split(), Regex, CSV, and NLP
Tokenize strings in Python with split(), regular expressions, shlex, CSV parsing, and NLP tools by matching the tokenizer to the input grammar.
Print to stderr in Python: sys.stderr and Logging
Print diagnostics to stderr in Python with print(), sys.stderr, and logging while keeping stdout clean for pipelines and tests.
Read stdin in Python: input(), sys.stdin, Pipes, and EOF
Read Python standard input interactively or as a stream, with explicit choices for prompts, pipes, EOF, text, bytes, and tests.
T-Test in Python with SciPy: One-Sample and Two-Sample
Run t-tests in Python with SciPy, choose one-sample or independent tests, interpret p-values, assumptions, alternatives, and effect size.
Python Documentation Tools: Sphinx, pydoc, MkDocs, and More
Compare Python documentation tools including Sphinx, pydoc, MkDocs, docstrings, autodoc, API references, and documentation testing.
Get File Size in Python: pathlib, os, Bytes, and Directory Trees
Get a file size in Python with pathlib or os, convert bytes safely, handle missing paths, and distinguish one file from a directory tree.
Python kwargs.get(): Optional Arguments Without KeyError
Use kwargs.get() in Python for optional keyword arguments while handling defaults, None, required keys, validation, and explicit function APIs.
Python Set Difference: -, difference(), and update()
Use Python set difference with -, difference(), and difference_update() to find values missing from another set while keeping mutation and symmetry clear.