def __init__(self, expression):
        self.expression = expression
        self.value = None

        if expression:
            try:
                self.value = self.evaluate(self.expression)
            except __HOLE__ as e:
                raise e
            except Exception as e:
                pass
dataset/ETHPy150Open devttys0/binwalk/src/binwalk/core/common.py/MathExpression.__init__