PNDSPY1221¶

Message Pandas < pandas.core.strings.accessor.StringMethods.len > 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: For the column data type, only string, list, and dict values are supported. All column values must be of the same type.

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

s = pd.Series(['abc', 'def', 'ghi'])
result = s.str.len

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Output¶

The SMA adds the EWI PNDSPY1221 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: PNDSPY1221 => pandas.core.strings.accessor.StringMethods.len has a partial mapping, with few scenarios not supported. Check Snowpark pandas documentation for more detail.
s = pd.Series(['abc', 'def', 'ghi'])
result = s.str.len

Copy

Recommended fix¶

Data type consideration: For the column data type, only string, list, and dict values are supported. All column values must be of the same type.

Ensure data types are compatible:

Check column dtypes with df.dtypes before the operation
Use .astype() to convert columns to expected types
Numeric operations may require explicit casting: df['col'].astype(float)

Additional recommendations¶

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