code: def left_skewed_df():
      return pd.DataFrame(
          {
              "left skewed": [
                  2,
                  3,
                  4,
                  5,
                  7,
                  9,
                  11,
                  11,
                  11,
                  12,
                  12,
                  12,
                  13,
                  15,
              ]
          },
      )
  
imports: import logging
  import pandas
  import pytest
  from woodwork.logical_types import NaturalLanguage
  from woodwork.table_schema import ColumnSchema
  from featuretools import EntitySet
  from featuretools.primitives import Day, TransformPrimitive
  from featuretools.utils.recommend_primitives import DEFAULT_EXCLUDED_PRIMITIVES, TIME_SERIES_PRIMITIVES, _recommend_non_numeric_primitives, _recommend_skew_numeric_primitives, get_recommended_primitives
label_desc: Use image node_id 3 for calling a global function with example usage: left_skewed_df() and returns: pd