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| -rw-r--r-- | Doc/library/sys.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst index e4dbf17..e87b7e1 100644 --- a/Doc/library/sys.rst +++ b/Doc/library/sys.rst @@ -709,6 +709,12 @@ always available. :func:`os.popen`, :func:`os.system` or the :func:`exec\*` family of functions in the :mod:`os` module.) + .. note:: + + The standard streams are text in text mode by default. To write or read + binary data to these, use the underlying binary buffer. For example, to + write bytes to :data:`stdout`, use ``sys.stdout.buffer.write(b'abc')``. + .. data:: __stdin__ __stdout__ |