PM2Ring

#!/usr/bin/env python3

''' Use a PhotoImage to plot single pixels in a Tkinter Label

    For some strange reason, it starts out fast but slows down...

    Written by PM 2Ring 2017.05.13
'''

import tkinter as tk

PM2Ring

#!/usr/bin/env python3

''' Use a PhotoImage to plot single pixels in a Tkinter Label

    Written by PM 2Ring 2017.05.13
'''

import tkinter as tk
from time import perf_counter
import sys

PM2Ring

PM2Ring

#!/usr/bin/env python3

''' Simple orbit sim

    Uses a PhotoImage to plot single pixels in a Tkinter Canvas
    Built from tk_photoimage_pixels3.py

    Written by PM 2Ring 2017.05.20
'''

PM2Ring

#!/usr/bin/env python

""" Compare the speed of sum(xrange()) to sum(range())

    Written by PM 2Ring 2017.06.05
"""

from timeit import Timer

cmds = {

PM2Ring

n = '12345678901234567890'
total = units = a = sum(map(int, n))
for k, d in enumerate(n[:-1], 1):
    units -= int(d)
    a = (a - int(n[-k:])) * 10 + units
    total += a
print(total)

PM2Ring

#!/usr/bin/env python3

''' Compare the speeds of zip and various Numpy functions
    for stacking to 1D Numpy arrays into a 2D array

    See https://stackoverflow.com/q/44409084/4014959

    Written by PM 2Ring 2017.06.08
'''

PM2Ring

#!/usr/bin/env python3

''' Compare the speeds of random.shuffle
    with sorted using a random key function

    Written by PM 2Ring 2017.06.09

    Python 2 / 3 compatible
'''

PM2Ring

x = 1968, y = 926, rule = B3/S23
1046b2o$1046bo$1038bo5bobo$1038bobo3b2o$1021bo17bobo$1021b2o16bo2bo$
1012b2o2b2o4b2o15bobo$1012b2o2b2o4b3o13bobo5b2o12b2o$1016b2o4b2o7bobo
4bo7bo13b2o$1021b2o9b2o10bobo13b2o$1021bo10bo11b2o14bo$1059bobo$1059bo
bo$1039b2o19bo$1038bobo$1040bo$1057b2o3b2o$1057bobobobo57b2o$1058b5o
58bo$1028bo7b2o21b3o51bo5bobo$1028b2o6b2o22bo52bobo3b2o$1027bobo66bo
17bobo$1096b2o16bo2bo$1087b2o2b2o4b2o15bobo$1087b2o2b2o4b3o13bobo5b2o
12b2o$1091b2o4b2o7bobo4bo7bo13b2o$1096b2o9b2o10bobo13b2o$1020b2o35bobo
36bo10bo11b2o14bo$1021b2o34b2o75bobo$1020bo37bo75bobo$1114b2o19bo$
1047b2o64bobo$1047b2o12b3o51bo$1060bo3bo67b2o3b2o$1013bo37bo7bo5bo66bo

PM2Ring

#!/usr/bin/env python3

''' Show HTML file structure

    Written by PM 2Ring 2017.06.19
'''

import sys
from html.parser import HTMLParser