Matplotlib Colorbar: cmap, norm, Labels, and Layout
Create an honest Matplotlib colorbar by connecting it to a mappable, controlling cmap and norm, sharing scales, and managing layout.
Python Blog: Tutorials, Fixes, and Projects
Browse practical Python tutorials, error fixes, library guides, data science examples, and project ideas from Python Pool.
Nested Classes in Python: Inner Classes and Design Choices
Use nested classes in Python when a helper type belongs to one outer class, while understanding scope, instances, inheritance, and alternatives.
Matplotlib Subplot Spacing: tight_layout, constrained Layout, and GridSpec
Fix Matplotlib subplot spacing with tight_layout, constrained layout, subplots_adjust, and GridSpec without clipped labels or overlapping axes.
Fix invalid literal for int() with base 10 in Python
Fix invalid literal for int() with base 10 by validating text, stripping whitespace, handling decimals, choosing bases, and reporting bad input.
Convert a Python Float to a String: Precision and Formatting
Convert Python floats to strings with str(), f-strings, format(), fixed decimals, scientific notation, and predictable machine-readable output.
Python SHA-256: Hash Bytes, Files, and Messages
Calculate SHA-256 in Python with hashlib, hash files in chunks, compare digests safely, and distinguish integrity checks from password storage or encryption.
NumPy cross(): 3D Vectors, Batches, Axes, and 2D Deprecation
Use NumPy cross for 3D vector products and batches, control vector axes, understand broadcasting, and replace deprecated 2D inputs.
Matplotlib zorder: Control Plot Layer Order
Control which Matplotlib artists appear in front with zorder, including grids, patches, lines, text, annotations, and legends.
Fix Only Size-1 Arrays Can Be Converted to Python Scalars
Fix this NumPy TypeError with ufuncs, indexing, astype(), shape checks, and a clear choice between one scalar and an array-wide result.
Matplotlib annotate(): Add Labels and Arrows to Plots
Use Matplotlib annotate() with xy, xytext, arrows, coordinate systems, boxed labels, clipping, and readable exported plots.