Optimize _encode_multipart_message #75
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By using BytesIO while generating the body instead of continuous string concatenations. This drastically reduces execution time by not recreating the string for each concatenation. In one case, execution time fell from 140 seconds to 0.14; three orders of magnitude!
hackermd
approved these changes
Nov 13, 2022
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See commit messages for more details. The changes were initially implemented on top of v0.53 (due to #70 (comment)) but I cherry-picked them on top of master to open a PR.