code: def __init__(self, errors="raise", downcast=None, **kw):
      super().__init__(errors=errors, downcast=downcast, **kw)
  
file_path: mars/mars/dataframe/base/to_numeric.py
imports: import numpy
  import pandas
  from ..operands import DataFrameOperand, DataFrameOperandMixin
  from ...serialization.serializables import StringField
  from ..initializer import Series
  from ...tensor import tensor
  from ..core import SERIES_TYPE
  from ...tensor.core import TENSOR_TYPE, TensorOrder
  from ...core import ENTITY_TYPE, OutputType
label_desc: Use image node_id 1 to create a new DataFrameToNumeric object from inherited base classes: DataFrameOperand, DataFrameOperandMixin with example: obj = DataFrameToNumeric(errors, downcast)