def __init__(self, expr):
self.expr = expr
self.varname = varname("COL", expr)
def __init__(self, parent: Expr, selftype):
self.parent = parent
self.selftype = selftype
self.varname = varname("COL", self)
def __init__(self, name: str):
self.name = name
self.varname = varname("COL", self)
def __init__(self, parent: Expr, ops):
self.parent = parent
self.ops = ops
self.varname = varname("COL", self)
def __init__(self, lhs: Expr, rhs: Expr, ops):
self.lhs = lhs
self.rhs = rhs
self.ops = ops
self.varname = varname("COL", self)
def __init__(self, schema: Set[str], inputs: Set[str]):
self.schema = schema
self.inputs = inputs
self.varname = varname("DF", self)
def __init__(self, value):
self.value = value
self.varname = varname("COL", self)