UnboundLocalError: local variable 'periodocity' referenced before assignment

[jtfields]

I'm running AtsPy with a date-time index with frequency of A-DEC and receive a "periodicity' error. Could this be due to the "season = infer_from_data" not supporting A-DEC? If so, is there another option to manually specify a season value?

DatetimeIndex(['1997-12-31', '1998-12-31', '1999-12-31', '2000-12-31',
'2001-12-31', '2002-12-31', '2003-12-31', '2004-12-31',
'2005-12-31', '2006-12-31', '2007-12-31', '2008-12-31',
'2009-12-31', '2010-12-31', '2011-12-31', '2012-12-31',
'2013-12-31', '2014-12-31', '2015-12-31', '2016-12-31',
'2017-12-31'],
dtype='datetime64[ns]', freq='A-DEC')

<class 'pandas.core.frame.DataFrame'>
The data has been successfully parsed by infering a frequency, and establishing a 'Date' index and 'Target' column.
15
An insample split of training size 15 and testing size 6 has been constructed

UnboundLocalError Traceback (most recent call last)
in ()
10 model_list=["Prophet"]
11 am = AutomatedModel(df = zillowByZip, model_list=model_list, season="infer_from_data",forecast_len=20)
---> 12 forecast_in, performance = am.forecast_insample()
13 forecast_out = am.forecast_outsample()
14 all_ensemble_in, all_ensemble_out, all_performance = am.ensemble(forecast_in, forecast_out)

4 frames
/usr/local/lib/python3.6/dist-packages/atspy/init.py in infer_periodocity(train)
145 periodocity = 1000
146
--> 147 return periodocity
148
149 def select_seasonality(train, season):

UnboundLocalError: local variable 'periodocity' referenced before assignment

[rahul4tripathi2]

'root cause - it is not able to infer_freq of the date column for that reason it is not able to satisfy any
condition of def time_feature(df,perd): for that reason you are getting above error
use that command to see infer_freq pd.infer_freq(df.index)

Solution -

1. goto /usr/local/lib/python3.6/dist-packages/atspy/init.py
2. change elif perd=="W": to elif perd=="W-SUN": if you are doing weekly prediction.
3. restart your runtime or Jupyter notebook.
4. re-run entire notebook again and the issue will get fixed.
5. Done

@Team can we connect as def time_feature(df,perd): function is not generic.

[firmai]

@rahul4tripathi2 Thanks I always appreciate when someone comes with solutions. Would you be able to submit a pull request when you see changes needed? Best, Derek.

[rahul4tripathi2]

Below are the changes which i think should be done in infer_periodicity function. I'm not sure it is optimal code or not.
https://pandas.pydata.org/pandas-docs/version/0.9.1/timeseries.html

def infer_periodocity(train):
perd = pd.infer_freq(train.index)
if perd in ["MS","M","BM","BMS"]:
periodocity = 12
elif perd in ["BH","H"]:
periodocity = 24
elif perd=="B":
periodocity = 5
elif perd=="D":
periodocity = 7
elif perd in ["W-SUN","W-MON","W-TUE","W-WED","W-THU","W-FRI","W-SAT"]:
periodocity = 52
elif perd in ["Q","QS","BQ","BQS"]:
periodocity = 4
elif perd in ["A","BA","AS","BAS"]:
periodocity = 10
elif perd in ["T","min"]:
periodocity = 60
elif perd=="S":
periodocity = 60
elif perd in ["L","ms"]:
periodocity = 1000
elif perd in ["U","us"]:
periodocity = 1000
elif perd=="N":
periodocity = 1000

return periodocity