Python Lore

Understanding Principal Component Analysis with scikit-learn

Matrix multiplication for PCA transformation, projecting centered data onto principal axes. Visualize transformed data with scatter plots using Matplotlib.

asyncio Python modules

Customizing asyncio Event Loop Implementations

asyncio, Python modulesCustomizing, Event Loop Implementations

Python asyncio event loop internals. How the loop handles non-blocking I/O, scheduled callbacks, Tasks, and Futures using a ready queue, min-heap, and selectors.

Python modules PyTorch

Data Loading and Processing using torch.utils.data

Python modules, PyTorchData Loading, torch.utils.data

PyTorch DataLoader custom collate_fn for variable size data. Handle variable length sequences, tensors with different shapes, and avoid RuntimeException by padding batches.

http Python modules

Managing HTTP Redirects with http.client.HTTPRedirectHandler

http, Python moduleshttp.client.HTTPRedirectHandler, Redirect Management

HTTP 301, 302, 307, 308 redirects for POST requests. Preserving the request method vs changing to GET. Python urllib.request.HTTPRedirectHandler example.

Python modules TensorFlow

Exploring TensorFlow Datasets for Data Loading

Python modules, TensorFlowData Loading, TensorFlow Datasets

TensorFlow custom data pipelines with `tf.data`. Use `from_tensor_slices` for arrays or `from_generator` with `output_signature` for large, scalable datasets.

json Python modules

Using json.detect_encoding for Encoding Detection

json, Python modulesEncoding, json.detect_encoding

Heuristic character encoding detection for BOM-less data using Python's charset-normalizer. A tiered strategy vs. json.detect_encoding for handling non-UTF-8 data.

Python modules SciPy

Spatial Data Structures and Algorithms with scipy.spatial

Python modules, SciPyscipy.spatial, Spatial Data

K-d tree for efficient range search and query ball problems. SciPy's `query_ball_point` finds all points within a radius, outperforming brute-force O(n²) loops.

Pandas Python modules

Sorting Data with pandas.DataFrame.sort_values

Pandas, Python modulesData Sorting, pandas.DataFrame.sort_values

Pandas sort_values performance guide. Compare quicksort, mergesort, heapsort. Stable vs unstable sort. O(n log n) complexity, data types, memory impact.

Pillow (PIL Fork) Python modules

Image Histograms and Statistics with Pillow

Pillow (PIL Fork), Python modulesHistograms, Statistics

Python Pillow contrast correction for low contrast photos. Contrast stretching with ImageOps.autocontrast & histogram equalization with ImageOps.equalize.

Flask Python modules

Serving JSON Data with Flask

Flask, Python modulesFlask, Serving JSON

Flask API error handling for JSON. Custom JSON error responses for 404 and 500 status codes using @app.errorhandler instead of Flask's default HTML pages.

Python Lore

Understanding Principal Component Analysis with scikit-learn

Customizing asyncio Event Loop Implementations

Data Loading and Processing using torch.utils.data

Managing HTTP Redirects with http.client.HTTPRedirectHandler

Exploring TensorFlow Datasets for Data Loading

Using json.detect_encoding for Encoding Detection

Spatial Data Structures and Algorithms with scipy.spatial

Sorting Data with pandas.DataFrame.sort_values

Image Histograms and Statistics with Pillow

Serving JSON Data with Flask

Python Programming for Beginners

Murach’s Python Programming

Python Mastery

Python for Beginners