Python Code Collection

A collection of Python scripts covering simulations, games, calculators, visualizations, and utilities.

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Root Scripts

Script	Dependencies	Description
arrow.py	numpy, matplotlib	Draws an arrow over a colored grid, highlights which cells it passes through, and computes a weighted sum using time-of-flight values.
arrow_grid.py	numpy, matplotlib	Exhaustively searches all edge-to-edge arrow paths across a grid to find the one with the minimum cell-value sum, then plots the result.
bike_calc.py	stdlib only	Prints a repair invoice for an Ariel Rider e-bike and calculates the total cost of parts across two invoices.
blueflower.py	stdlib only	Uses the turtle module to draw 50 randomly placed blue flowers made of overlapping circles.
chinesetest.py	pandas, tkinter (stdlib)	Gamified Chinese flashcard app. Player fights a dragon by selecting the correct Chinese translation via a Tkinter GUI. Supports easy/hard modes and a dictionary lookup mode. Reads from words.csv.
computational_geometry.py	Shapely, matplotlib	Demonstrates computational geometry using Shapely: creates points, lines, rings, and polygons; computes areas and lengths; plots an event park layout with an info booth and stage.
dancingparticles.py	numpy, matplotlib	Simulates bouncing particles with elastic collisions and sphere-of-influence attraction. Renders an animation and saves it as dancingparticles.mp4.
drawheart.py	numpy, matplotlib	Plots a parametric heart curve using trigonometric equations and saves it to heart.png.
ecc.py	numpy	Expected Casualty Calculator for space vehicle failures. Models failure probabilities across flight regimes (deorbit, free flight, parachute) and computes expected casualties against an accepted limit.
evcar_calc.py	stdlib only	Compares the per-mile fuel cost of a Polestar 2 EV versus a Toyota Corolla given user-supplied electricity and gas prices.
game.py	stdlib only	Skeleton for a text-based RPG called "Blood World Final Battle."
gratitudes.py	numpy	Defines a Friend class and prints a formatted table of friends with their affiliations and contact info.
imagemetadata.py	exif, reverse-geocoder, pycountry	Reads EXIF metadata from JPEG images (device info, timestamps, GPS coordinates), reverse-geocodes GPS to a location name, and opens the location in Google Maps.
pygame_test.py	pygame	Minimal pygame window that draws a blue circle. Used as a basic pygame sanity check.
tracker_income.py	stdlib only	Tracks tutoring and miscellaneous income by client and date, prints per-client totals, and summarizes Roth IRA contributions.
tracker_timeoff.py	stdlib only	Tracks PTO hours used by date and prints milestone warnings as weekly thresholds are crossed.
vector_assess.py	numpy	Loads a .npy file produced by vector_calc.py and validates that the nominal + fixed-offset + proportional-offset vectors reconstruct correctly.
vector_calc.py	numpy, matplotlib	Generates randomized 3D vectors by combining a nominal vector with fixed-magnitude and proportional-magnitude Gaussian offsets, plus transverse dispersion. Plots a 3D quiver chart and saves results to a .npy file.

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Subdirectories

cardgame/

A turn-based creature card game playable by human or AI.

File	Dependencies	Description
main.py	PyYAML, rich	Entry point. Sets up players and runs the game loop.
creature.py	PyYAML	Defines Creature, Player, AIPlayer, and HumanPlayer classes. Loads creature definitions from a YAML file.
display.py	rich	Renders game state to the terminal using Rich panels, tables, and progress bars.
turn.py	PyYAML, rich	Handles game turn logic: buy phase, activate phase, and attack phase.
turn_print.py	rich	Utilities for printing turn-related output.

gymnasium_test/

File	Dependencies	Description
gym_test.py	gymnasium, pygame	Tests a Gymnasium reinforcement learning environment with a pygame-based display.

socialnetwork/socialchart/

File	Dependencies	Description
socialchart.py	networkx, matplotlib	Builds and visualizes a social network graph using NetworkX and matplotlib.

teachpython/

File	Dependencies	Description
hello.py	stdlib only	Basic hello world / teaching script.