from math import sqrt

class Uncertainly:
    __slots__ = [
        "average",
        "length",
        "standard_deviation",
        "type_A_uncertain",
        "type_B_uncertain",
        "total_uncertain",
        "data"
    ]

    def __init__(self, data: tuple, type_B_uncertain: float, param_tp: float):
        self.data = data
        self.average:float = sum(self.data) / len(self.data)
        self.length = len(self.data)
        
    # def cal_standard_deviation(self):
        data_cut = [(datum-self.average) ** 2 for datum in self.data]

        self.standard_deviation:float = sqrt(sum(data_cut) / (self.length - 1))

        self.type_A_uncertain:float = param_tp * self.standard_deviation / sqrt(self.length)

        self.total_uncertain = 2 * sqrt(self.type_A_uncertain**2 + type_B_uncertain**2)
        self.type_B_uncertain = type_B_uncertain

    def output_std(self):
        print(f"平均为：{self.data}/{self.length}={self.average}\n")
        # print(f"{self.average}\n")
        print(f"标准差：{round(self.standard_deviation,4)}")
        print(f"3S区间：[{round(self.average - 3 * self.standard_deviation,4)},{round(self.average +3 * self.standard_deviation,4)}]")
        print(f"B类不确定度确认：{self.type_B_uncertain}\n")
        print(f"总不确定度：2 * ✓{round(self.type_A_uncertain,4)}^2 + {round(self.type_B_uncertain,4)}^2={round(self.total_uncertain,4)}")
        print(f"结果表达式为：{round(self.average,4)}+-{round(self.total_uncertain,4)}")