| import pygame as pg | |
| import math | |
| from pygame.locals import * | |
| """ | |
| thick_aaline(surface, color, point0, point1, width) | |
| draw a anti-aliased line from point1 to point2 with given width | |
| The algorithms computes the corners (a, b, c, and d) | |
| that form the borders of the thick line and then draws a filled |
| Lessons in dynamic attributes for a class using self.__dict__ | |
| From python.org documents: | |
| object.__dict__ : | |
| A dictionary or other mapping object | |
| used to store an object’s (writable) attributes. | |
| Learn to object.__dict__ for: | |
| 1. Setting defaults for the classes/object attributes |
| from __future__ import division # we need floating division | |
| from svg.path import Path, Line, Arc, CubicBezier, QuadraticBezier, parse_path | |
| import pygame | |
| """ demo of using a great python module svg.path by Lennart Regebro | |
| see site: https://pypi.org/project/svg.path/ | |
| to draw svg in pygame | |
| """ | |
| from svg.path import Path, Line, Arc, CubicBezier, QuadraticBezier, parse_path |
| # This examples runs only in python 3.+ versions since Tkinter was changed | |
| from svg.path import Path, Line, Arc, CubicBezier, QuadraticBezier, parse_path | |
| from tkinter import Tk, Canvas, Frame, BOTH | |
| """ demo of using a great python module svg.path by | |
| Lennart Regebro see site: https://pypi.org/project/svg.path/ | |
| to draw svg in Tkinter | |
| """ | |
| from svg.path import Path, Line, Arc, CubicBezier, QuadraticBezier, parse_path |
| from __future__ import division # for running in 2.7+ python | |
| from svg.path import Path, Line, Arc, CubicBezier, QuadraticBezier, parse_path | |
| import turtle | |
| """ demo of using a great python module svg.path by Lennart Regebro see site: https://pypi.org/project/svg.path/ | |
| to draw svg in Tkinter | |
| """ | |
| svgpath = """m 76,232.24998 c 81.57846,-49.53502 158.19366,-20.30271 216,27 61.26714,59.36905 79.86223,123.38417 9,156 | |
| -80.84947,31.72743 -125.19991,-53.11474 -118,-91 v 0 """ |
| # bst.py immutable Binary search tree (not balanced) | |
| # using 'yield from' new in python 3.3 | |
| # start with tree = None | |
| # nodes are a list of [value, left_tree, right_tree] | |
| # every node is a subtree, so tree argument is a tree or subtree | |
| def insert(tree, value): | |
| """ creates tree if tree is None, returns new tree""" | |
| if not tree: |
| # uses python3 features | |
| from time import time | |
| # Fast solution for problem from Tomasz Nurkiewicz blog: | |
| # https://www.nurkiewicz.com/2018/09/brute-forcing-seemingly-simple-number.html?utm_source=programmingdigest&utm_medium=email&utm_campaign=featured | |
| # heuristic to greatly speed up from discussion of knights tour problem at | |
| # https://runestone.academy/runestone/static/pythonds/Graphs/KnightsTourAnalysis.html | |
| # by Gerry Jenkins see my channel youtube.com/gjenkinslbcc |
A tuple is an array of object references
it is ordered, and indexed from zero
you cannot modify a tuple entry (immutable)
| import inspect | |
| """ var_dump('vars') module to dump variables (python 3.6+: uses f strings)""" | |
| def var_dump(var_list_str): | |
| """ print variables in callers scope indicated in space delimited string param""" | |
| # retrieve information needed on callers frame | |
| prev_frame = inspect.currentframe().f_back | |
| frame_info = inspect.getframeinfo(prev_frame) |
| from bs4 import BeautifulSoup | |
| import re | |
| import requests | |
| import csv | |
| import time | |
| import json | |
| # version 1.1 added handling of youtube.com/channel/ | |
| # to already handling of youtube.com/user based channels |