liusitan opened a new issue, #13535:
URL: https://github.com/apache/arrow/issues/13535
This is the code for reading.
preader.py
```python
import pyarrow as pa
# f = '/tmp/fib.arrow'
f = 'arraydata.arrow'
with pa.ipc.open_file(f) as reader:
t = reader.read_all()
print(t.to_string(show_metadata=True, preview_cols=2))
This is the code for writing
pwriter.py
```
```python
import numpy as np
import pyarrow as pa
arr = pa.array(np.arange(8))
schema = pa.schema([
pa.field('nums', arr.type)
])
n_legs = pa.array([2, 4, 5, 100])
t = pa.Table.from_arrays([n_legs], names=["nums"],metadata = {"loc":"san
diego"})
with pa.OSFile('arraydata.arrow', 'wb') as sink:
with pa.ipc.new_file(sink, schema=schema) as writer:
# batch = pa.record_batch([arr], schema=schema)
writer.write_table(t)
```
weirdly, when I run the python writer first, and reader second, it does not
print out the metadata stored, which is {"loc":"san diego"}
I am using macOS, if it matters:>
<img width="498" alt="image"
src="https://user-images.githubusercontent.com/20542539/177695553-f070a949-5656-4fbf-801c-2fae39397bee.png";>
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