Text vs binary, encode/decode.
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What is the difference between bytes and str?
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bytesstrencoding
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str is a sequence of Unicode code points (text); bytes is raw binary; you encode str to bytes and decode bytes back to str using a codec like UTF-8.
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PYencode/decode round-trip; chars vs bytes
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Dossier 31 of 120 decoded in the Python track. One more won't hurt.