controls.py 文件源码

def parse(cls, func):
        if isinstance(func, six.string_types):
            func = func.lower().strip()
        if func in [np.equal, '=', 'eq', '-eq', '==', 'is', 'equal', 'equal to']:
            return cls.eq
        elif func in [np.not_equal, '<>', 'ne', '-ne', '!=', 'not', 'not_equal', 'not equal to']:
            return cls.ne
        elif func in [np.greater, '>', 'gt', '-gt', 'above', 'after', 'greater', 'greater than']:
            return cls.gt
        elif func in [np.less, '<', 'lt', '-lt', 'below', 'before', 'less', 'less than']:
            return cls.lt
        elif func in [np.greater_equal, '>=', 'ge', '-ge', 'greater_equal', 'greater than or equal to']:
            return cls.ge
        elif func in [np.less_equal, '<=', 'le', '-le', 'less_equal', 'less than or equal to']:
            return cls.le
        raise ValueError('Invalid Comparison name: %s'%func)

#
### Control Condition classes
#