[Fix] UnExpectedValueRangeError when phase appending after prediction

[lisphilar]

Summary

Codes

import covsirphy as cs
snr = cs.ODEScenario.auto_build(geo="Japan", model=cs.SIRFModel)
snr.build_with_template(name="Predicted", template="Baseline");
snr.predict(days=30, name="Predicted")

Outputs

 UnExpectedValueRangeError                 Traceback (most recent call last)
/tmp/ipykernel_4885/3249802525.py in <cell line: 1>()
----> 1 snr.predict(days=30, name="Predicted", verbose=0);

~/work/covid19-sir/covid19-sir/.venv/lib/python3.9/site-packages/covsirphy/science/ode_scenario.py in predict(self, days, name, seed, verbose, X, **kwargs)
    534             (phase_df.index[-1]) | (phase_df["end"] < phase_df["end"].shift(periods=-1) - timedelta(days=3))]
    535         for phase_dict in phase_df.to_dict(orient="records"):
--> 536             self._append(name=name, **phase_dict)
    537         return self
    538 

~/work/covid19-sir/covid19-sir/.venv/lib/python3.9/site-packages/covsirphy/science/ode_scenario.py in _append(self, name, end, **kwargs)
    463                 target = end.strftime(self.DATE_FORMAT)
    464                 _min = (param_df.index[-1] + timedelta(days=3)).strftime(self.DATE_FORMAT)
--> 465             raise UnExpectedValueRangeError(
    466                 name="end", target=target, value_range=(_min, None)) from None
    467         self._snr_alias.update(name=name, target=snr_dict.copy())

UnExpectedValueRangeError: 'end' must be over or equal to 12Sep2022, but 10Sep2022 was applied. 

Environment

• CovsirPhy version: 2.26.1
• Python version: 3.9.13
• Installation: poetry
• System: WSL (Ubuntu)