PNDSPY1017

Message pandas.core.reshape.encoding.get_dummies has a partial mapping because there is a not supported scenario in Snowpark pandas.

Category Warning

Description

This issue appears when the SMA identifies a pandas.core.reshape.encoding.get_dummies usage. Snowpark pandas currently has limitations with pandas.get_dummies. It’s supported if parameters “dummy_na” and “drop_first” are both false; otherwise it isn’t supported.

Scenario

An unsupported use of pandas.core.reshape.encoding.get_dummies.

Input

The following example shows an unsupported use of pandas.core.reshape.encoding.get_dummies.

import pandas as pd
import numpy as np

s1 = ['a', 'b', np.nan]
pd.get_dummies(s1, dummy_na=True)

s2 = list('abcaa')
pd.get_dummies(s2, drop_first=True)

Output

The SMA adds the EWI PNDSPY1017 to the output code to indicate that it has a scenario not supported in Snowpark pandas.

from snowflake.snowpark.modin import plugin
import modin.pandas as pd
import numpy as np

s1 = ['a', 'b', np.nan]
#EWI: PNDSPY1017 => pandas.core.reshape.encoding.get_dummies is supported if parameters "dummy_na" and "drop_first" are both false, otherwise it is not supported. Check Snowpark pandas documentation for more detail.
pd.get_dummies(s1, dummy_na=True)

s2 = list('abcaa')
#EWI: PNDSPY1017 => pandas.core.reshape.encoding.get_dummies is supported if parameters "dummy_na" and "drop_first" are both false, otherwise it is not supported. Check Snowpark pandas documentation for more detail.
pd.get_dummies(s2, drop_first=True)