[issue26801] Fix shutil.get_terminal_size() to catch AttributeError

[Martin Panter]

Martin Panter added the comment:

How about:

try:
    size = os.get_terminal_size(sys.__stdout__.fileno())
except (AttributeError, ValueError, OSError):
    # stdout is None, closed, detached, or not a terminal, or
    # os.get_terminal_size() is unsupported
    size = os.terminal_size(fallback)

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<http://bugs.python.org/issue26801>
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