jorisvandenbossche opened a new issue, #423: URL: https://github.com/apache/arrow-nanoarrow/issues/423
Running ```python import nanoarrow as na na.Array([0, 1, 2, None]) ``` gives ``` ValueError Traceback (most recent call last) File [~/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py:363](http://localhost:8888/lab/tree/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py#line=362), in c_array_stream(obj, schema) 362 try: --> 363 array = c_array(obj, schema=schema) 364 return CArrayStream.from_array_list([array], array.schema, validate=False) File [~/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py:179](http://localhost:8888/lab/tree/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py#line=178), in c_array(obj, schema) 178 if _obj_is_iterable(obj): --> 179 return _c_array_from_iterable(obj, schema) 181 raise TypeError( 182 f"Can't convert object of type {type(obj).__name__} to nanoarrow.c_array" 183 ) File [~/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py:607](http://localhost:8888/lab/tree/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py#line=606), in _c_array_from_iterable(obj, schema) 606 if schema is None: --> 607 raise ValueError("schema is required for CArray import from iterable") 609 obj_len = -1 ValueError: schema is required for CArray import from iterable The above exception was the direct cause of the following exception: TypeError Traceback (most recent call last) Cell In[2], line 1 ----> 1 na.Array([0, 1, 2, None]) File [~/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/array.py:153](http://localhost:8888/lab/tree/repos/arrow-nanoarrow/python/src/nanoarrow/array.py#line=152), in Array.__init__(self, obj, schema, device) 150 self._data = CMaterializedArrayStream.from_c_array(obj) 151 return --> 153 with c_array_stream(obj, schema=schema) as stream: 154 self._data = CMaterializedArrayStream.from_c_array_stream(stream) File [~/scipy/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py:366](http://localhost:8888/lab/tree/repos/arrow-nanoarrow/python/src/nanoarrow/c_lib.py#line=365), in c_array_stream(obj, schema) 364 return CArrayStream.from_array_list([array], array.schema, validate=False) 365 except Exception as e: --> 366 raise TypeError( 367 f"Can't convert object of type {type(obj).__name__} " 368 "to nanoarrow.c_array_stream or nanoarrow.c_array" 369 ) from e TypeError: Can't convert object of type list to nanoarrow.c_array_stream or nanoarrow.c_array ``` The message at the end (what you typically look at) is not super clear why this would not be possible to convert a list (it _is_ possible), while the error in the middle actually has the correct message ("schema is required for CArray import from iterable") -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
