python - python 中奇怪的循环？

Question

我是 python 新手，但我有基本的 java 背景。有学习曲线需要面对，所以我遇到了麻烦。特别是对于这个循环...

from random import randint;
class simpleAI:
inputMatter = 0;
inputEnergyString = 0;
inputEnergy = 0;
resultMatter = 0;
resultEnergy = 0;
inputMatterMemory = [];
inputEnergyMemory = [];
resultMatterMemory = [];
resultEnergyMemory = [];
searchIndex = 0;
found = 0;
lookin = 0;
lookingEnergy = 0;

def cycle(self):
    self.inputMatter = input("Matter: ");
    self.inputMatter = int(self.inputMatter, 10);
    self.inputMatterMemory.append(self.inputMatter);
    self.inputEnergyString = input("Energy: ");
    self.inputEnergy = int(self.inputEnergyString, 10);
    self.inputEnergyMemory.append(self.inputEnergy);
    #Check for an event that resulted in positive energy
    while(self.searchIndex < self.resultEnergyMemory.__len__()):
        print("we are foring!");
        if(self.inputEnergyMemory.__getitem__((self.inputMatterMemory.index(self.inputMatter))) == self.inputEnergy):
             print("we are iffy!");
             self.resultMatter = self.resultMatterMemory.__getitem__(self.inputMatterMemory.index(self.inputMatter));
             self.resultEnergy = self.resultEnergyMemory.__getitem__(self.inputEnergyMemory.index(self.inputEnergy));
             self.found = 1;
             break;

        else:
            self.searchIndex = self.searchIndex + 1;

    if(self.found == 0):
        self.resultMatter = randint(0, 256);
        self.resultMatterMemory.append(self.resultMatter);
        self.resultEnergy = randint(0, 256);
        self.resultEnergyMemory.append(self.resultEnergy);
        print("Creating new pair...");
        print("Result matter: ", self.resultMatter);
        print("Result Energy: ", self.resultEnergy);
    elif(self.found == 1):
        print("Found positive pair from memory");
        print("Result matter: ", self.resultMatter);
        print("Result memory: ", self.resultEnergy);

    self.inputMatter = 0;
    self.inputEnergyString = 0;
    self.inputEnergy = 0;
    self.resultMatter = 0;
    self.searchIndex = 0;
    self.found = 0;

它在第一次迭代中产生正确的结果，但在其他迭代中回退到“创建”新对，即使它应该在之前输入时返回一对。我究竟做错了什么？

Answer 1

你为自己做了很多额外的工作。您可以简单地创建一个单独的类来将所有数据保存在一起，并且只需循环访问该类的单个数组，而不是尝试维护多个并行数组。

from random import randint;

class MatterEnergyData:
    def __init__(self, inputMatter, inputEnergy, resultMatter, resultEnergy):
        self.inputMatter = inputMatter
        self.inputEnergy = inputEnergy
        self.resultMatter = resultMatter
        self.resultEnergy = resultEnergy

    def __str__(self):
        return "Result matter: %s\r\nResult energy: %s" % \ 
            self.resultMatter, self.resultEnergy

class simpleAI:
    matterEnergyDataPoints = []

    def cycle(self):
        inputMatter = int(input("Matter: "))
        inputEnergy = int(input("Energy: "))
        resultObj = None
        for obj in self.matterEnergyDataPoints:
            if obj.inputEnergy == inputEnergy and obj.inputMatter == inputMatter:
                print("Found positive pair from memory")
                resultObj = obj
                break

        if resultObj == None:
            print("Creating new pair...")
            resultObj = MatterEnergyData(inputMatter, inputEnergy, randint(0, 256), randint(0, 256))
            self.matterEnergyDataPoints.append(resultObj)

        print resultObj