Dima Ryazanov created ARROW-1554: ------------------------------------ Summary: "ImportError: DLL load failed: The specified module could not be found" on Windows 10 Key: ARROW-1554 URL: https://issues.apache.org/jira/browse/ARROW-1554 Project: Apache Arrow Issue Type: Bug Components: Python Affects Versions: 0.7.0, 0.6.0, 0.5.0 Environment: Windows 10 (x64) Python 3.6.2 (x64) Reporter: Dima Ryazanov
I just tried pyarrow on Windows 10, and it fails to import for me: >>> import pyarrow Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Program Files\Python36\lib\site-packages\pyarrow\__init__.py", line 32, in <module> from pyarrow.lib import cpu_count, set_cpu_count ImportError: DLL load failed: The specified module could not be found. Not sure which DLL is failing, but I do see some DLLs in the pyarrow folder: C:\Users\dima\Documents>dir "C:\Program Files\Python36\lib\site-packages\pyarrow\" Volume in drive C has no label. Volume Serial Number is 4CE9-CC3C Directory of C:\Program Files\Python36\lib\site-packages\pyarrow 09/19/2017 01:14 AM <DIR> . 09/19/2017 01:14 AM <DIR> .. 09/19/2017 01:14 AM 2,382,336 arrow.dll 09/19/2017 01:14 AM 604,160 arrow_python.dll 09/19/2017 01:14 AM 3,402 compat.py ... However, I cannot open them using ctypes.cdll. I wonder if some dependency is missing? >>> open('C:\\Program >>> Files\\Python36\\Lib\\site-packages\\pyarrow\\parquet.dll', 'rb') <_io.BufferedReader name='C:\\Program Files\\Python36\\Lib\\site-packages\\pyarrow\\parquet.dll'> >>> >>> cdll.LoadLibrary('C:\\Program >>> Files\\Python36\\Lib\\site-packages\\pyarrow\\parquet.dll') Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Program Files\Python36\lib\ctypes\__init__.py", line 426, in LoadLibrary return self._dlltype(name) File "C:\Program Files\Python36\lib\ctypes\__init__.py", line 348, in __init__ self._handle = _dlopen(self._name, mode) OSError: [WinError 126] The specified module could not be found -- This message was sent by Atlassian JIRA (v6.4.14#64029)