PNDSPY1246¶

Message Pandas < pandas.core.window.expanding.Expanding.var > has a partial mapping with a few scenarios not supported in Snowpark.

Category Warning

Description¶

This issue appears when the SMA detects the use of a pandas element that has a direct equivalent in Snowpark pandas, but some scenarios might behave differently than pandas.

Reason: N for axis = 1 or min_periods = 0. N for string window with center = True. N for Timedelta or BaseIndexer window.

Scenario¶

A method with a few scenarios that aren’t supported in Snowpark.

Input¶

The following example shows a method with a few unsupported scenarios in Snowpark.

import pandas as pd

df = pd.DataFrame({'A': [1, 2, 3, 4, 5]})
rolling = df.rolling(window=2)
result = rolling.var

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Output¶

The SMA adds the EWI PNDSPY1246 to the output code to let you know that this element has a few scenarios that aren’t supported in Snowpark.

import snowflake.snowpark.modin.pandas as pd

#EWI: PNDSPY1246 => pandas.core.window.expanding.Expanding.var has a partial mapping, with few scenarios not supported. Check Snowpark pandas documentation for more detail.
df = pd.DataFrame({'A': [1, 2, 3, 4, 5]})
rolling = df.rolling(window=2)
result = rolling.var

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Recommended fix¶

Behavioral note: N for axis = 1 or min_periods = 0. N for string window with center = True. N for Timedelta or BaseIndexer window.

This behavior may differ from native pandas. Recommended actions:

Test with a representative sample of your data
Compare results with native pandas if precision is critical
Use .to_pandas() if exact pandas behavior is required

Additional recommendations¶

Check the Snowpark pandas documentation to verify which scenarios aren’t supported for that specific element.