yoshiki obata created BEAM-7137:
-----------------------------------
Summary: TypeError caused by using str variable as header argument
in apache_beam.io.textio.WriteToText
Key: BEAM-7137
URL: https://issues.apache.org/jira/browse/BEAM-7137
Project: Beam
Issue Type: Bug
Components: sdk-py-core
Affects Versions: 2.11.0
Environment: Python 3.5.6
macOS Mojave 10.14.4
Reporter: yoshiki obata
Using str header to apache_beam.io.textio.WriteToText as argument cause
TypeError with Python 3.5.6 - or maybe higher - despite docstring says header
is str.
This error occurred by writing header to file without encoding to bytes at
apache_beam.io.textio._TextSink.open.
```
Traceback (most recent call last):
File "apache_beam/runners/common.py", line 727, in
apache_beam.runners.common.DoFnRunner.process
File "apache_beam/runners/common.py", line 555, in
apache_beam.runners.common.PerWindowInvoker.invoke_process
File "apache_beam/runners/common.py", line 625, in
apache_beam.runners.common.PerWindowInvoker._invoke_per_window
File
"/Users/yob/.local/share/virtualenvs/test/lib/python3.5/site-packages/apache_beam/io/iobase.py",
line 1033, in process
self.writer = self.sink.open_writer(init_result, str(uuid.uuid4()))
File
"/Users/yob/.local/share/virtualenvs/test/lib/python3.5/site-packages/apache_beam/options/value_provider.py",
line 137, in _f
return fnc(self, *args, **kwargs)
File
"/Users/yob/.local/share/virtualenvs/test/lib/python3.5/site-packages/apache_beam/io/filebasedsink.py",
line 185, in open_writer
return FileBasedSinkWriter(self, os.path.join(init_result, uid) + suffix)
File
"/Users/yob/.local/share/virtualenvs/test/lib/python3.5/site-packages/apache_beam/io/filebasedsink.py",
line 389, in __init__
self.temp_handle = self.sink.open(temp_shard_path)
File
"/Users/yob/.local/share/virtualenvs/test/lib/python3.5/site-packages/apache_beam/io/textio.py",
line 393, in open
file_handle.write(self._header)
TypeError: a bytes-like object is required, not 'str'
```
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