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perplexing error


On Sunday, 9 September 2018 00:02:49 UTC+5:30, Peter Otten  wrote:
> Sharan Basappa wrote:
> 
> > I am running a small python code. The main module calls another data
> > loader module. I keep this getting this error.
> > 
> > AttributeError: 'str' object has no attribute 'raw_data'
> > 
> > I tried few things in the code and finally realized that no matter the
> > line number is 68 of data loader module. Of course, this was after a few
> > iterations. I then commented this line itself but I still get this error.
> > 
> > Below is a little longer code snippet.
> > 
> > AttributeErrorTraceback (most recent call last)
> > D:\Projects\Initiatives\machine learning\Log analyzer\log_analyzer.py in
> > <module>()
> >      32         model = para['models']
> >      33         assert model in ['DT', 'LR', 'SVM']
> > ---> 34         raw_data, event_mapping_data =
> > data_loader.bgl_data_loader(para)
> >      35
> >      36 logger.debug("raw data %s \n", raw_data)
> > D:\Projects\Initiatives\machine
> > learning\loglizer-master\loglizer-master\utils\data_loader.py in
> > bgl_data_loader(para)
> >      66         # get the label for each log
> >      67         data_df['label'] = (data_df['label'] != '-').astype(int)
> > ---> 68         #logger.debug("data frame %s \n", data_df)
> >      69         logger.debug("\n")
> >      70         raw_data = data_df[['label','seconds_since']].as_matrix()
> > AttributeError: 'str' object has no attribute 'raw_data'
> > 
> > If you notice, line 68 is commented.
> > I am not sure what I am doing wrong.
> > 
> > Need some inputs ...
> 
> The source code in the traceback is read from the file when the exception is 
> raised. If you edit a module after importing it the traceback may pick lines 
> that caused the code raising the exception, but now contain something 
> completely different. A little demo:
> 
> >>> with open("tmp.py", "w") as f: f.write("def f():\n return 1/0\n")
> ... 
> 21
> >>> import tmp
> >>> with open("tmp.py", "w") as f: f.write("def f():\n return 1/2\n")
> ... 
> 21
> >>> tmp.f()
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/home/peter/tmp.py", line 2, in f
>     return 1/2
> ZeroDivisionError: division by zero
> 
> Therefore you must ensure that the interpreter is restarted after changing 
> the source code. This may include restarting a server or an editor.

Understood. Now I know why the error is stuck on that line.
This gives me a clue.