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* atbash.py: Tighten up the benchmarks
* updating DIRECTORY.md
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
54 lines
1.4 KiB
Python
54 lines
1.4 KiB
Python
""" https://en.wikipedia.org/wiki/Atbash """
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import string
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def atbash_slow(sequence: str) -> str:
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"""
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>>> atbash_slow("ABCDEFG")
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'ZYXWVUT'
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>>> atbash_slow("aW;;123BX")
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'zD;;123YC'
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"""
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output = ""
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for i in sequence:
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extract = ord(i)
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if 65 <= extract <= 90:
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output += chr(155 - extract)
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elif 97 <= extract <= 122:
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output += chr(219 - extract)
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else:
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output += i
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return output
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def atbash(sequence: str) -> str:
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"""
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>>> atbash("ABCDEFG")
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'ZYXWVUT'
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>>> atbash("aW;;123BX")
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'zD;;123YC'
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"""
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letters = string.ascii_letters
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letters_reversed = string.ascii_lowercase[::-1] + string.ascii_uppercase[::-1]
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return "".join(
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letters_reversed[letters.index(c)] if c in letters else c for c in sequence
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)
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def benchmark() -> None:
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"""Let's benchmark our functions side-by-side..."""
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from timeit import timeit
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print("Running performance benchmarks...")
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setup = "from string import printable ; from __main__ import atbash, atbash_slow"
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print(f"> atbash_slow(): {timeit('atbash_slow(printable)', setup=setup)} seconds")
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print(f"> atbash(): {timeit('atbash(printable)', setup=setup)} seconds")
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if __name__ == "__main__":
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for example in ("ABCDEFGH", "123GGjj", "testStringtest", "with space"):
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print(f"{example} encrypted in atbash: {atbash(example)}")
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benchmark()
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