mirror of https://github.com/python/cpython
Explain what os.read() returns at end of file.
This closes SF bug #550409. Applying to release21-maint & release22-maint.
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@ -471,7 +471,9 @@ Availability: \UNIX, Windows.
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\begin{funcdesc}{read}{fd, n}
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Read at most \var{n} bytes from file descriptor \var{fd}.
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Return a string containing the bytes read.
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Return a string containing the bytes read. If the end of the file
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referred to by \var{fd} has been reached, an empty string is
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returned.
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Availability: Macintosh, \UNIX, Windows.
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Note: this function is intended for low-level I/O and must be applied
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