[GitHub] [beam] damccorm opened a new issue, #20580: pathlib.Path, PathLike and __fspath__ support (PEP 519)

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damccorm opened a new issue, #20580:
URL: https://github.com/apache/beam/issues/20580

   It would be nice to support `pathlib.Path`-like objects, as per PEP 519: https://www.python.org/dev/peps/pep-0519/
   
   Currently, the following fail with: `TypeError: file_path_prefix must be a string or ValueProvider;got PosixPath('/tmp/pytest-of-forge-00/pytest-0/test_ptransform_beam0/output0.txt') instead`
   
   ```
   
   import pathlib
   
   path = pathlib.Path('/path/to/home')
   beam.io.WriteToText(path)
   
   ```
   
   
   Raised by FileBasedSink:
   
   ```
   
   class FileBasedSink(iobase.Sink):
   
     def __init__(self)
       if not isinstance(file_path_prefix,
   ((str, unicode), ValueProvider)):
         raise TypeError(...)
   
   ```
   
   
   It could be implemented by calling `os.fspath(file_path_prefix)`
   
   Imported from Jira [BEAM-11135](https://issues.apache.org/jira/browse/BEAM-11135). Original Jira may contain additional context.
   Reported by: conchylicultor.


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