mutable default <class 'greykite.framework.templates.autogen.forecast_config.ModelComponentsParam'> for field SILVERKITE is not allowed: use default_factory

[koonleong]

I tried running the sample file 0100_simple_forecast.ipynb from Greykite but I could not get beyond the import statements.

I am using Greykite 0.5.0. on Python version_info(major=3, minor=11, micro=4, releaselevel='final', serial=0)

The error message starts with:

ValueError Traceback (most recent call last) Cell In[4], line 12 10 from greykite.framework.templates.autogen.forecast_config import ForecastConfig 11 from greykite.framework.templates.autogen.forecast_config import MetadataParam ---> 12 from greykite.framework.templates.forecaster import Forecaster 13 from greykite.framework.templates.model_templates import ModelTemplateEnum 14 from greykite.framework.utils.result_summary import summarize_grid_search_results

File /opt/homebrew/lib/python3.11/site-packages/greykite/framework/templates/forecaster.py:40 38 from greykite.framework.pipeline.pipeline import forecast_pipeline 39 from greykite.framework.pipeline.utils import get_basic_pipeline ---> 40 from greykite.framework.templates.auto_model_template import get_auto_silverkite_model_template 41 from greykite.framework.templates.autogen.forecast_config import ForecastConfig 42 from greykite.framework.templates.autogen.forecast_config import forecast_config_from_dict

File /opt/homebrew/lib/python3.11/site-packages/greykite/framework/templates/auto_model_template.py:36 34 from greykite.framework.templates.autogen.forecast_config import ForecastConfig 35 from greykite.framework.templates.forecast_config_defaults import ForecastConfigDefaults ---> 36 from greykite.framework.templates.model_templates import ModelTemplateEnum 37 from greykite.framework.templates.simple_silverkite_template_config import SILVERKITE_DAILY_90 38 from greykite.framework.templates.simple_silverkite_template_config import SILVERKITE_HOURLY_1

File /opt/homebrew/lib/python3.11/site-packages/greykite/framework/templates/model_templates.py:55 53 from greykite.framework.templates.auto_arima_template import AutoArimaTemplate 54 from greykite.framework.templates.lag_based_template import LagBasedTemplate ---> 55 from greykite.framework.templates.multistage_forecast_template import MultistageForecastTemplate 56 from greykite.framework.templates.prophet_template import ProphetTemplate 57 from greykite.framework.templates.silverkite_template import SilverkiteTemplate

File /opt/homebrew/lib/python3.11/site-packages/greykite/framework/templates/multistage_forecast_template.py:39 37 from greykite.framework.templates.autogen.forecast_config import MetadataParam 38 from greykite.framework.templates.base_template import BaseTemplate ---> 39 from greykite.framework.templates.multistage_forecast_template_config import MultistageForecastTemplateConfig 40 from greykite.framework.templates.multistage_forecast_template_config import MultistageForecastTemplateConstants 41 from greykite.sklearn.estimator.base_forecast_estimator import BaseForecastEstimator

File /opt/homebrew/lib/python3.11/site-packages/greykite/framework/templates/multistage_forecast_template_config.py:44 42 from greykite.framework.templates.prophet_template import ProphetTemplate 43 from greykite.framework.templates.silverkite_template import SilverkiteTemplate ---> 44 from greykite.framework.templates.simple_silverkite_template import SimpleSilverkiteTemplate 45 from greykite.sklearn.estimator.lag_based_estimator import LagUnitEnum 48 @DataClass 49 class MultistageForecastTemplateConfig:

and ends with

File /opt/homebrew/Cellar/python@3.11/3.11.4/Frameworks/Python.framework/Versions/3.11/lib/python3.11/dataclasses.py:815, in _get_field(cls, a_name, a_type, default_kw_only) 811 # For real fields, disallow mutable defaults. Use unhashable as a proxy 812 # indicator for mutability. Read the hash attribute from the class, 813 # not the instance. 814 if f._field_type is _FIELD and f.default.class.hash is None: --> 815 raise ValueError(f'mutable default {type(f.default)} for field ' 816 f'{f.name} is not allowed: use default_factory') 818 return f

ValueError: mutable default <class 'greykite.framework.templates.autogen.forecast_config.ModelComponentsParam'> for field SILVERKITE is not allowed: use default_factory

(also raised in https://stackoverflow.com/questions/76554925/value-error-with-greykite-framework-templates-autogen-forecast-config-modelcomp)

[ejprice]

@koonleong I ran into this myself and did some quick testing. It appears that Greykite 1.0 also exhibits this problem when used with Python 3.11. I tested it on Debian Bookwork as well as MacOS. In both cases, the exception is the same as what you were getting with 0.50 on 3.11.