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Don't trigger exception if file doesn't have a fileno #31

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Jan 31, 2025
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4 changes: 4 additions & 0 deletions blockbuster/blockbuster.py
Original file line number Diff line number Diff line change
Expand Up @@ -304,6 +304,10 @@ def _get_io_wrapped_functions(
stderr = sys.stderr

def file_write_exclude(file: io.IOBase, *_: Any, **__: Any) -> bool:
try:
file.fileno()
except io.UnsupportedOperation:
return True
return file in {stdout, stderr, sys.stdout, sys.stderr} or file.isatty()

return {
Expand Down