AlenkaF commented on code in PR #33698:
URL: https://github.com/apache/arrow/pull/33698#discussion_r1073308531
##########
python/pyarrow/io.pxi:
##########
@@ -1459,23 +1484,21 @@ cdef class BufferReader(NativeFile):
Examples
--------
+ Create an Arrow input stream and inspect it:
>>> import pyarrow as pa
>>> data = b'reader data'
- >>> f = pa.BufferReader(data)
- >>> f.size()
+ >>> buf = memoryview(data)
Review Comment:
It needs some kind of a source ([str, Path, buffer, file-like object,
…](https://docs.python.org/3/library/stdtypes.html#str)):
```python
>>> import pyarrow as pa
>>> data = b'reader data'
>>> with pa.input_stream(data) as stream:
... stream.size()
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "pyarrow/io.pxi", line 2403, in pyarrow.lib.input_stream
hasattr(source, 'closed')):
TypeError: pa.input_stream() called with instance of '<class 'bytes'>'
```
Can change the source, if preferred.
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