Python getattr(): Read Attributes with Safe Defaults
Use Python getattr to read dynamic attributes, provide deliberate defaults, distinguish missing attributes from None, and avoid hiding programming errors.
Tutorials
Browse Python tutorials for beginners and working developers, including syntax, libraries, examples, projects, and real problem-solving guides.
Python timedelta to Seconds: total_seconds() and Units
Convert Python timedelta values to seconds with total_seconds(), preserve days and microseconds, handle negative durations, and avoid confusing seconds with timestamps.
Import Classes From Another Python File or Package
Import a Python class through a stable module or package path, then run the project consistently to avoid path and circular-import errors.
Enable Long File Paths for Python on Windows
Handle long Windows paths in Python by enabling Win32 long paths, shortening project roots, and testing the same environment.
Fix SyntaxError: Invalid Token in Python
Fix Python invalid token errors by checking encoding, quotes, invisible characters, numeric literals, Python version, and the exact reported line.
Convert Radians to Degrees in Python: math and NumPy
Convert radians to degrees in Python with math.degrees(), NumPy degrees(), formulas, arrays, rounding, and round-trip checks.
CPLEX Python and DOcplex: Install, Model, and Solve
Use CPLEX with Python and DOcplex to build optimization models, install compatible packages, add variables and constraints, and solve safely.
Convert MATLAB to Python: NumPy, SciPy, and Matplotlib Patterns
Convert MATLAB code to Python by mapping arrays, indexing, plotting, scripts, and toolbox functions to NumPy, SciPy, and Matplotlib with tested equivalents.
Clear Memory in Python: References, Caches, and Peak Usage
Clear memory in Python by removing references, releasing caches, and reducing peak allocations instead of relying on del or garbage collection alone.
Python Short-Circuit Evaluation: and, or, and not
Learn Python short-circuit evaluation with and, or, and not, truthiness, guard clauses, default values, side effects, and common pitfalls.