darklord1807 opened a new issue #11523:
URL: https://github.com/apache/arrow/issues/11523
Hello,
I am trying tor read the column data from the CRecordBatch object, but it
says Object of type 'CRecordBatch' has no attribute 'column_data'.
**Example.pyx**
```
from pyarrow.lib cimport *
from pyarrow cimport import_pyarrow
import_pyarrow()
def get_array_length(obj):
cdef shared_ptr[CRecordBatch] record = pyarrow_unwrap_batch(obj)
if record.get() == NULL:
raise TypeError("not a batch")
return record.get().column_data(1)
```
**test.py**
```
batch = pa.RecordBatch.from_pandas(df)
print(example.get_array_length(batch))
```
**Full Error:**
```
tree = Parsing.p_module(s, pxd, full_module_name)
Error compiling Cython file:
------------------------------------------------------------
...
cdef shared_ptr[CRecordBatch] record = pyarrow_unwrap_batch(obj)
if record.get() == NULL:
raise TypeError("not a batch")
return record.get().column_data(1)
^
------------------------------------------------------------
example.pyx:15:23: Object of type 'CRecordBatch' has no attribute
'column_data'
Traceback (most recent call last):
File "setup.py", line 9, in <module>
ext_modules = cythonize("example.pyx")
File
"/usr/local/lib/python3.7/site-packages/Cython/Build/Dependencies.py", line
1102, in cythonize
cythonize_one(*args)
File
"/usr/local/lib/python3.7/site-packages/Cython/Build/Dependencies.py", line
1225, in cythonize_one
raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: example.pyx
```
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