jorisvandenbossche opened a new issue, #424:
URL: https://github.com/apache/arrow-nanoarrow/issues/424
Doing `na.Array([0, 1, 2], na.int64())` works fine, but once there is a None
in the iterable, it no longer works:
```python
>>> import nanoarrow as na
>>>
>>> arr = na.Array([0, 1, 2], na.int64())
>>> arr
nanoarrow.Array<int64>[3]
0
1
2
>>> arr = na.Array([0, 1, 2, None], na.int64())
Traceback (most recent call last):
File
"/home/joris/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py", line
363, in c_array_stream
array = c_array(obj, schema=schema)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/joris/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py", line
179, in c_array
return _c_array_from_iterable(obj, schema)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/joris/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py", line
622, in _c_array_from_iterable
buffer, n_values = _c_buffer_from_iterable(obj, schema)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/joris/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py", line
644, in _c_buffer_from_iterable
n_values_written = builder.write_elements(obj)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "src/nanoarrow/_lib.pyx", line 1923, in
nanoarrow._lib.CBufferBuilder.write_elements
struct.error: required argument is not an integer
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/home/joris/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/array.py", line
153, in __init__
with c_array_stream(obj, schema=schema) as stream:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/joris/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py", line
366, in c_array_stream
raise TypeError(
TypeError: Can't convert object of type list to nanoarrow.c_array_stream or
nanoarrow.c_array
```
(and again, similar as https://github.com/apache/arrow-nanoarrow/issues/423,
the final error message is a bit unclear)
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