我想在Python中通过蒙特卡洛模拟找到'e‘的值，我得到的是NameError

Question

#使用MonteCarlo模拟导入随机查找'e‘的值

FindE类：

def __init__(self):
    self.s = 0
    self.N = 1000000
    

def random_points(self):
    for i in range(1,100000):
        x = random.uniform(0, 1)
        self.s += x
        if self.s > 1.0:
            return i


def exceed_dict(self, N):
    d = dict()
    for _ in range(N):
        count = random_points()

        if count not in d:
            d[count] = 0
        d[count] += 1

    return d


def calculating_e(self):
    d = exceed_dict(N)
    print(sum([k*v for k, v in d.items()]) / N)

E=打印()FindE(e.calculating_e())

Answer 1

您正在尝试调用python类中的变量和方法。在调用self.之前，不要忘记使用它。应该是这样的：

import random

class FindE:

    def __init__(self):
        self.s = 0
        self.N = 1000000
    

    def random_points(self):
        for i in range(1,100000):
            x = random.uniform(0, 1)
            self.s += x
            if self.s > 1.0:
                return i


    def exceed_dict(self, N):
        d = dict()
        for _ in range(N):
            count = self.random_points()

            if count not in d:
                d[count] = 0
            d[count] += 1

        return d


    def calculating_e(self):
        d = self.exceed_dict(self.N)
        print(sum([k*v for k, v in d.items()]) / self.N)
e = FindE()
print(e.calculating_e())