old_contents: 
  from toolz.curried import curry, pipe
  from ..utils.core import sanitize_dataframe
  from ..utils.data import (
      MaxRowsError, limit_rows, sample, to_csv, to_json, to_values, check_data_type
  )
  
  
  @curry
  def default_data_transformer(data):
      return pipe(data, limit_rows, to_values)
  
  
  __all__ = (
      'MaxRowsError',
      'curry',
      'sanitize_dataframe',
      'default_data_transformer',
      'limit_rows',
      'pipe',
      'sample',
      'to_csv',
      'to_json',
      'to_values',
      'check_data_type'
  )
  
new_contents: 
  from toolz.curried import curry, pipe
  from ..utils.core import sanitize_dataframe
  from ..utils.data import (
      MaxRowsError, limit_rows, sample, to_csv, to_json, to_values, check_data_type
  )
  
  
  @curry
  def default_data_transformer(data, max_rows=5000):
      return pipe(data, limit_rows(max_rows=max_rows), to_values)
  
  
  __all__ = (
      'MaxRowsError',
      'curry',
      'sanitize_dataframe',
      'default_data_transformer',
      'limit_rows',
      'pipe',
      'sample',
      'to_csv',
      'to_json',
      'to_values',
      'check_data_type'
  )
  
subject: add ability to set max_rows of default transformer