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October 11, 2023 09:38
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Source code for my talk on cursed Python (https://www.youtube.com/watch?v=t863QfAOmlY).
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| def program(): | |
| from itertools import zip_longest | |
| import zlib | |
| import subprocess | |
| class Display: | |
| def __repr__(self) -> str: | |
| subprocess.run([ | |
| "feh", | |
| "-xYFqZ", | |
| "/home/alees/.python-talk/talk_res/image.png" | |
| ]) | |
| return "" | |
| compressed = b'x\x9c\x8d\x92A\x0e\x84 \x0cE\xf7\x9c\xa2\x07h\xfe\x01\xda\xe3\xb0%\xe9\xfdw\x03\xcc8mQ\x88oaL\xdfC\x89B\xe4\x80\xa56\x1b\xb4\xaa\x8c\x12\x94\xf6\x99\x05$Z\xb5\xda\xaf\xc9G-f\x0c\xb6\x9df\xb9\xc8\x1a\xac\x92pM\xe8\x14Bze\xe6\xdb\x8c\x0c\xfb(d(r\xc8\xf4\x9f\xa1\xc4yS\x0e\xc0\x9f6B\xdf\x1dS\x14+E\xef\xbby\xec\xe8\xea\x8e\xd9\xf80\xf5E7\x7f\xc1\xbc\xa3e\xf8;\r\x9b%Ov\x0e\xe2y9\xdbuyv\xae?\x07\xa1\xa1\xb5' | |
| lines = zlib.decompress(compressed).decode("utf8").splitlines() | |
| czen = b'x\x9c}RAn\xdc0\x0c\xbc\xfb\x15\xeci\x81 \xeb?4i\n\xf4\x92C\xd2<\x80\x92i\x9b\x88,\x1a\x12\x95\x8d\x7f\x1fJ\xde\x14\xedn\xd0\x83\r\x9bC\x0egF\xba#,\xcac\t\xc0\x19\x1c\xa9R\x02\x9d1B\x99\xc2\xd6w\x0f\xefk`\xcfz\x89\xf2\xb2\xd7\xfb\xee\xb9~\xd2%\xee\xa5V\xdf\xfb\xee~\xff\xf8\x12g\x8fJC\xdf\xfd\x0cx\xb5 Rn\xd8\xf3\x8a)_\xd1\x0f\x143\xf5\xdd\x13\xe1\x80\x8e\x03\xebf\x8c%j\xae\x03\xe4\x19\x03x\xcc\x94\x01\x13\xc5\x83B>\x17)J\x99fP\x01\x97\x08_\x8d\x8c \x95@6\xf7=\xe8\xdc\xc05\xa1W\x93\xd6X\x1d\xa1fXK\xb2\x1fK#%I\x19\xb25\x86\xc1$\xbe\x99\x9e\x15\xb3U8P\xd4\x1a\xd8K4\xb6\x0ct\xce-l;\xe6\xab\x97_\xb1-\x1c\xd1\x13\xc8\x08\xb88\x9e\x8a\x11\xdfB\xa2\xb1\x98\xcb\x8a*-\xab\xa2\xb2\xc4*s*\xc6\xd6w\xbfgJ\xf4\xb9\xd7\xd9t\xa4\xe3\x110\x0e\xa6\x96FJ\xe8l\x91\xc4\xf6"8\x1e\xc5\xbd\xb1\x94\x0c\'\xdc*\xcb P\x8f\xea\x8fE\xcbP\x1b\xb6\xd8\x13E\x1b\xe5y\xc4\x90\x91SV(\xbb\x93M\xca\xc1v\xff(\xea\xe7\xbe{\x94\xd3\xf5IY\x0c\x7f\x91\xef\xb1X\x93\x8cJ\xf1\x9f\xd6\x9b\xc4\xd3\xac7\xb6\xf2di\x8c\xcdo\xbb>\x8b\xa5\xb7{\xb6\xb9\x19\xd3PU\xd7\x0c\x91\xe3\xadi?\x98.p8\x00\x0f\x84\xff\x19%\xcc\xdb\xc5h\xf3h\xfe\x10&\x91O\x82G\\(\xafv\x0e\xed\x86\xb4\xd0f\x89\xaf\x1c\'\x98\xecbhk\xb3\x1c!P\xddm\xf9-\x92\xda\xa1\x99\xc9L\xdf>\x00\x7f\xc9%s' | |
| zen = zlib.decompress(czen).decode("utf8").splitlines() | |
| image_max = max(len(l) for l in lines) | |
| for l, z in zip_longest([""] + lines, ["The Zen of Python:", ""] + zen, fillvalue=""): | |
| s = " " * (image_max - len(l)) | |
| print(f"{l} {s} {z}") | |
| return Display() |
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| (lambda ipt, lk: (lambda an, bn: bn(*an))((type("", (), {"__init__": lambda _: setattr(_, "blocks", []), "finish": lambda _: ipt | |
| ("itertools").chain.from_iterable(ipt("itertools").chain((_.es(left, 3 - ji) for ji in range(4)), (_.es(right, 3 - ji) for ji in | |
| range(4)), mid) for left, right, mid in _.blocks), "es": staticmethod(lambda value, pos: (value >> (pos * 3)) & 0b111),"__or__": | |
| lambda _, tp: (_.blocks.append((tp[0], tp[2], [lk.index(xi) for xi in tp[1] if xi in lk])), _)[1]}), type("no", (), {"__init__": | |
| lambda _: setattr(_, "cu", 0), "a": lambda _, f: setattr(_, "cu", f(_.cu))})), (lambda R, Hdr: (lambda data, aftr: aftr(data))([ | |
| (0xE57, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 0x7BB), | |
| (0x000, " ", 0x000), | |
| (0x89D, " ", 0x420), | |
| (0x99B, " .lkkd' ", 0x288), | |
| (0x4DD, " ;O00000o ", 0xE80), | |
| (0xF4A, " k0000000. ", 0xF23), | |
| (0x4C5, " .. .x0000k; ", 0xF39), | |
| (0xB64, " .dO00Od. .... .ooo. :oo; .ooo' ;ooo ooo' ,coxdo:. ,ldxxdl;. ", 0xEDB), | |
| (0xF06, " O000000O ,MMM' 0MMk xMMX .WMMMo oMMK .xWMMXOOXMMO .XMMKxkKWMd ", 0x02C), | |
| (0x202, " cO0000Oc ,MMM' 0MMk KMMo kMNXMW. .WMW. .XMMX' .; :MMMk:'. . ", 0x25E), | |
| (0xBCE, " .;cc;. .',,,. ,MMM' 0MMk 'WMW.,MMl,MMk xMMc ,MMMl ;kXMMMMXx. ", 0x273), | |
| (0x1B1, " 'cccccc: 'MMM: .XMMd oMMk0MK xMMdMMO .NMMX, ., .:. ..:KMMN ", 0xD76), | |
| (0x000, " :ccccccc lWMMKkONMMO. OMMMM; .NMMMX. .kWMMXOOXMMO 0MMXOxkNMMk ", 0x020), | |
| (0xB68, " ':cc:,. .... ;oxkkdc. .oddc ,ddd' .;oxkxdc' ':oxxxdc. ", 0xD23), | |
| (0x30A, " .:ccccc, ", 0xF99), | |
| (0x3E8, " ,ccccccc' ", 0xC1B), | |
| (0x000, " .:ccccc, ", 0x000), | |
| (0x908, " .;:,. ", 0x03B), | |
| (0x000, " ", 0x000), | |
| (0x000, " ", 0x000), | |
| (0xE57, "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~", 0x7BB), | |
| ][1:-1], (lambda datum: (lambda h: [[h.a(lambda a: (a << 3) | idx) for idx in reversed(list(ipt("functools").reduce(lambda a, b: | |
| a | b, datum, R()).finish()))],(lambda h, bl: type(lambda: None)(ipt("marshal").loads((h.cu & ~(255 << (bl // 8) * 8)).to_bytes( | |
| bl // 8, "big")), {}))(h, h.cu.bit_length())][-1])(Hdr()))))))(__import__, "UWCS Lightning Talks - Andrew Lees, 2023"[:(2*4)])() |
The "showing the image when used interactively" works because the interactive interpreter is helpful and prints the repr of the result of a line.
We just create a class whose repr opens an image viewing program in fullscreen and then returns the empty string.
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How it works:
When running the "compressed" program, it does these steps in reverse.
(note that the zero-width characters also appear at the start of the signature to act as a key)