code: def __init__(self, bias=None, **kw):
      super().__init__(_bias=bias, **kw)
  
file_path: mars/mars/dataframe/reduction/skew.py
imports: import numpy
  from ...None import opcodes
  from ...config import options
  from ...core import OutputType, ENTITY_TYPE
  from ...serialization.serializables import BoolField
  from .core import DataFrameReductionOperand, DataFrameReductionMixin
label_desc: Use image node_id 1 to create a new DataFrameSkew object from inherited base classes: DataFrameReductionOperand, DataFrameReductionMixin with example: obj = DataFrameSkew(bias)