api07.py 文件源码

def __init__(self, lower, upper=None, msg=None, **kwds):
        lower, upper, msg = _normalize_deviation_args(lower, upper, msg)
        normalize_numbers = lambda x: x if x else 0
        def function(diff):
            if not isinstance(diff, xDeviation):
                return False
            value = normalize_numbers(diff.value)  # Closes over normalize_numbers().
            required = normalize_numbers(diff.required)
            if isnan(value) or isnan(required):
                return False
            if value != 0 and required == 0:
                return False
            percent = value / required if required else 0  # % error calc.
            return lower <= percent <= upper  # Closes over *lower* and *upper*.
        function.__name__ = self.__class__.__name__
        super(allow_percent_deviation, self).__init__(function, msg, **kwds)
#_prettify_deviation_signature(allow_percent_deviation.__init__)