Please tell me the reason for the error in the API (DatastreamDSWS).

KAOKI_12345

When we attempted to retrieve data using the Python API (DatastreamDSWS), we encountered the error shown below and were unable to obtain the data.

Would you happen to know the possible cause of this issue?

We apologize for the inconvenience, but if you have any idea what might be causing this error, we would greatly appreciate your guidance.

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Log

get_data : Exception Occured

(<class 'Exception'>, Exception('Invalid Token Value'), <traceback object at 0x00000189D7CE5F40>) Traceback (most recent call last):

File "I:\Python\kakaku-Python38-1\lib\site-packages\DatastreamDSWS\DS_Response.py", line 146, in get_data

raise Exception("Invalid Token Value")

Exception: Invalid Token Value

None

Traceback (most recent call last):

File "\\XXXXXXX\031_010_Download_DataStream_20260430_aoki_debug.py", line 20, in <module>

df.columns = [" - ".join(col[0:2]) for col in df.columns]

AttributeError: 'NoneType' object has no attribute 'columns'

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Python versionPython 3.8 (Python38)

Thank you very much for your continued support.

ujjawal_khandelwal

Hi @KAOKI_12345,
Good day! Thank you for reaching out!

I think you need to reauthenticate yourself before making the API call. The second error is cascading effect of the first. This should work, if not please continue on this thread and I can help you. (if possible, pls share the code too). Thanks!