如何在循环中创建循环（Python）？

Question

我想在一个循环中执行一个循环，但当我尝试这样做时，与单个循环相比，我发现一个错误的计算

我的代码有一个单数循环：

betresult = []

#main parameters
budget = 1500
numofbets = 100
win = 7.5
loss = -15


for i in range(numofbets):
    #random list: 1 - win, 0 - loss
    test = np.random.choice(np.arange(0, 2), p=[0.333, 0.667])
    betresult.append(test)

    #number of win and loss
    winbets = np.sum(betresult)
    lossbets = numofbets - winbets

    #sum of win and loss
    winsum = winbets * win
    losssum = lossbets * loss

    #final sum
    result = budget - (winsum + losssum)

print(result)

我想把这段代码放到一个新的循环中，但是如果我用while或for做了一些明显的事情，我会发现一个错误的计算

对于单个循环，我通常得到one number between 1100 and 1800

计算错误的代码：

betresult = []

#main parameters
budget = 1500
numofbets = 100
win = 7.5
loss = -15

for i in range(10):   
    for j in range(numofbets):
        #random list: 1 - win, 0 - loss
        test = np.random.choice(np.arange(0, 2), p=[0.333, 0.667])
        betresult.append(test)

        #number of win and loss
        winbets = np.sum(betresult)
        lossbets = numofbets - winbets

        #sum of win and loss
        winsum = winbets * win
        losssum = lossbets * loss

        #final sum
        result = budget - (winsum + losssum)

     print(result)

对于双循环，我通常得到a number under 0。循环范围越大，0以下的数字越大

错误执行（计算）的示例：

1470.0
7.5
-1590.0
-3007.5
-4447.5
-5910.0
-7440.0
-8835.0
-10410.0
-11985.0

Answer 1

import numpy as np
betresult = []

#main parameters
budget = 1500
numofbets = 100
win = 7.5
loss = -15
summary = 0
for i in range(80):   
    for i in range(numofbets):
        test = np.random.choice(np.arange(0, 2), p=[0.333, 0.667])
        betresult.append(test)

        winbets = np.sum(betresult)
        lossbets = numofbets - winbets

        winsum = winbets * win
        losssum = lossbets * loss

        result = budget - (winsum + losssum)
     #betresult.clear() should be outside the second loop
     betresult.clear()

print(result)

我认为每次运行此循环时都需要清除betresult。 也许你需要一些额外的代码来计算，这取决于你想要什么

Answer 2

问题是betresult将10次迭代的所有值相加，这就是为什么会得到否定的答案

import numpy as np


#main parameters
budget = 1500
numofbets = 100
win = 7.5
loss = -15

for i in range(10):
    #declaring inside the first loop
    betresult = []
    for j in range(numofbets):
        #random list: 1 - win, 0 - loss
        test = np.random.choice(np.arange(0, 2), p=[0.333, 0.667])
        betresult.append(test)

        #number of win and loss
        winbets = np.sum(betresult)
        lossbets = numofbets - winbets

        #sum of win and loss
        winsum = winbets * win
        losssum = lossbets * loss

        #final sum
        result = budget - (winsum + losssum)
    print(result)