

def __init__(self, field):
    ' Initialize the filter class.\n\n        Parameters\n        ----------\n        field : str\n            The field to check for change\n        '
    field.field = field
    self.previous = None

dataset/ETHPy150Open enthought/pikos/pikos/filters/on_change.py OnChange.__init__/VarMisuse@14/60 `self`->`field`