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Back to pull request #140139

gh-140135: use `PyBytesWriter` in `io.RawIOBase.readall`; 3.98x faster #170006

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gh-140135: use `PyBytesWriter` in `io.RawIOBase.readall`; 3.98x faster

gh-140135: use `PyBytesWriter` in `io.RawIOBase.readall`; 3.98x faster #170006

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