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python

Programming language for data science

ProgrammingPreserve All Digits: Polars Read Excel to Utf8

Learn how to preserve up to 12 decimal digits when reading Excel with Polars to string (Utf8). Fix truncation using xlsx2csv_options, infer_schema_length=0, schema_overrides, or openpyxl engine for exact precision.

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ProgrammingFix Pyrogram Caption Entities Lost in Media Groups

Pyrogram send_media_group ignores caption_entities, losing bold, italic formatting in media groups. Learn why Telegram Bot API drops them and fix with individual send_photo/send_video calls to preserve MessageEntity formatting.

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ProgrammingUsing GTK4/libadwaita with Mojo: GUI Options

Can you use GTK (GTK4/libadwaita) for Mojo GUI development? No native support—use C FFI, embed Python PyGObject, or IPC. Guides, examples, pitfalls, and alternatives like mojo-qt.

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ProgrammingWhy Ollama Embeddings Slow on Linux VM ChromaDB Posthog

Fix slow Ollama embeddings in ChromaDB on Linux VM without CUDA: batch requests, disable Posthog telemetry, ignore benign warnings. Run fully local for privacy and speed up email embedding performance.

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ProgrammingPython getattr: Dynamic Access to Class Attributes by String

Learn how to use Python getattr to dynamically access class instance attributes with a string variable. Ideal for text adventure games mapping names like 'forest' to objects. Covers dict mapping, getattr(self), setattr patterns, and safe alternatives to globals() or eval().

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ProgrammingEnable Python Linting in VS Code: Interpreter & Setup

Step-by-step guide to enable and configure linting in VS Code Python extension. Select the right interpreter, install pylint or flake8 in venv, enable python.linting.enabled, and troubleshoot common issues for beginners following Mosh tutorials.

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ProgrammingHow to Get a Tkinter Menu's HMENU on Windows (Fast)

Why Tkinter doesn't expose a native HMENU on Windows, how to retrieve it with MN_GETHMENU + SendMessage when posted, and use SetMenuInfo to set a background.

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ProgrammingFix QOpenGLWidget Flicker in PySide6 Layouts

Embed QOpenGLWidget in PySide6 layouts without flickering on resize or idle. Step-by-step fixes, working code example, platform tips for Linux/Windows, and Qt bug workarounds using attributes and QSurfaceFormat.

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ProgrammingPractical Self-Contained Boolean Lambda Use Cases in Python

Discover practical use cases for self-contained boolean lambda functions in Python using equality operators. Examples for filtering with python filter lambda, sorting via python sorted lambda, predicates, and more without external dependencies.

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ProgrammingPython Console Output Without print(): logging & sys.stdout

Output text to the console in Python without print(): compare sys.stdout.write/writelines, os.write, logging, and file/tee with short examples and use cases.

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ProgrammingExtract Book Titles, Images & Prices with lxml XPath

Extract book titles, image URLs and prices from books.toscrape.com using lxml XPath in Python. Includes sample code, urljoin for images, and error handling.

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ProgrammingFix Manim OpenGL Text Rendering in Interactive Embed

Troubleshoot Manim CE OpenGL renderer issues with incorrect text or graph rendering in interactive_embed. Quick fixes: switch to Cairo, downgrade IPython to 8.0.1, update Manim. Debug checklist and best practices included.

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ProgrammingNumPy Polyfit: Fix Cubic Polynomial Coefficients Python

Why does sampling fail for cubic polynomial coefficients in NumPy? Fix Vandermonde matrix issues with np.polyfit, np.vander for accurate roots. Robust Python code for polynomial fitting and np.roots.

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ProgrammingFix Python ModuleNotFoundError in VS Code After Pip Install

Resolve Python ModuleNotFoundError when importing modules in VS Code after pip install. Learn common causes like wrong interpreter, unactivated virtual environment, name collisions, and step-by-step fixes including selecting the correct Python interpreter and using python -m pip.

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ProgrammingTroubleshoot Dask: Client Connects but No Workers Available

Dask client connects but reports no workers - troubleshoot scheduler, worker registration, network/TLS, version mismatches, autoscaling, and check worker logs.

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ProgrammingKivy RecycleView Dynamic Attribute Updates: Canvas Instructions Guide

Learn how to correctly update element attributes in Kivy RecycleView to prevent canvas instructions from being applied to wrong elements during scrolling. Comprehensive tutorial with code examples.

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ProgrammingFix boto3 RecursionError and ImportError in Python 3.11

Resolve boto3 compatibility issues with Python 3.11. Learn the correct version combinations for boto3, botocore, and urllib3 to fix RecursionError and ImportError.

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ProgrammingTkinter TclError: Invalid Boolean Operator in Tag Search Fix

Resolve `_tkinter.TclError: invalid boolean operator in tag search expression` in Tkinter `Canvas.find_withtag()`. Learn to handle `tkinter tag` tuples correctly to fix this common `tkinter tclerror`.

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ProgrammingPython JSON Conversion: Command Objects to JSON

Learn how to efficiently convert Python command objects to JSON with conditional parallelNode wrapping in Python 3.13. Group commands by properties and create custom JSON structures.

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ProgrammingPython urllib TimeoutError vs URLError Differences

Learn the key differences between TimeoutError and URLError exceptions in Python's urllib.request.urlopen. Understand why TimeoutError occurs after specified timeout while URLError happens closer to threshold.

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