jonded94 opened a new issue, #47602:
URL: https://github.com/apache/arrow/issues/47602
### Describe the bug, including details regarding any error messages,
version, and platform.
In Python, pyarrow.Schema before was not hashable when it has metadata set.
```
>>> import pyarrow
>>> schema = pyarrow.schema([], metadata={b"1": b"1"})
>>> hash(schema)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "pyarrow/types.pxi", line 2921, in pyarrow.lib.Schema.__hash__
TypeError: unhashable type: 'dict'
```
This is because the metadata (which is a dict) was tried to be hashed as-is,
which doesn't work.
Corresponding fix is contianed in this PR:
https://github.com/apache/arrow/pull/47601
### Component(s)
Python
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