Python 3 : Suspect_ID is not defined

Question

我目前正在为一门类(class)开展 Salem-esc 镇的项目，但我遇到了一个问题。我一直在尝试使 Suspect_ID 在全局范围内可用，但由于某种原因，它改为说(“名称'Suspect_ID'未定义”)，我尝试将其与其余的全局变量一起放在语句之外也无济于事。任何建议都会有帮助，如果需要任何其他信息，请随时询问，我希望您在这个程序上的运气比我目前的好。

def readinSuspects():

    #local variables
    global Suspect_name
    Suspect_name=["","","","","","","","","",""]
    global Suspect_age
    Suspect_age=[0,0,0,0,0,0,0,0,0,0]
    global Suspect_motive
    Suspect_motive=["","","","","","","","","",""]
    global Suspect_ID
    Suspect_ID=[0,0,0,0,0,0,0,0,0,0]
    global IsMurderer
    IsMurderer=[False,False,False,False,False,False,False,False,False,False]
    #subprogram body
    file = open("suspects.txt","r")
    for i in range(0,9):
        Suspect_name[i],Suspect_age[i],Suspect_motive[i], 
    Suspect_ID[i]=file.readline().split(',')
    return Suspect_name,Suspect_age,Suspect_motive,Suspect_ID,IsMurderer

编辑:我现在意识到问题可能出在其他地方，因此以下将是完整的程序，它还远未完成，我知道还有许多其他错误等。

import random

#Global variable
Guesses=[0]
Murderer=[0]

#Read In Function
def readinSuspects():
    #local variables
    global Suspect_name
    Suspect_name=["","","","","","","","","",""]
    global Suspect_age
    Suspect_age=[0,0,0,0,0,0,0,0,0,0]
    global Suspect_motive
    Suspect_motive=["","","","","","","","","",""]
    global Suspect_ID
    Suspect_ID=[0,0,0,0,0,0,0,0,0,0]
    global IsMurderer
    IsMurderer=[False,False,False,False,False,False,False,False,False,False]
    #subprogram body
    file = open("suspects.txt","r")
    for i in range(0,9):
        Suspect_name[i],Suspect_age[i],Suspect_motive[i], 
Suspect_ID[i]=file.readline().split(',')
    return Suspect_name,Suspect_age,Suspect_motive,Suspect_ID,IsMurderer


#randomly assign murderer
readinSuspects(Suspect_ID)
Murderer = random.randint(0,9)
for i in range(0,9):
    if Murderer == i:
#print Suspect_ID if working
        print(Suspect_ID[i])

Answer 1

首先，您的方法 readinSuspects() 不接受参数，但您使用一个参数 - Suspect_ID 调用它，该参数尚未定义。

我已经修改了您的代码，所以现在它必须可以工作:

import random

#Global variable
Suspect_name = []
Suspect_age = []
Suspect_motive = []
Suspect_ID = []
IsMurderer = []

Guesses=[0]
Murderer=[0]

#Read In Function
def readinSuspects():
    #local variables
    global Suspect_name
    Suspect_name=["","","","","","","","","",""]
    global Suspect_age
    Suspect_age=[0,0,0,0,0,0,0,0,0,0]
    global Suspect_motive
    Suspect_motive=["","","","","","","","","",""]
    global Suspect_ID
    Suspect_ID=[0,0,0,0,0,0,0,0,0,0]
    global IsMurderer
    IsMurderer=[False,False,False,False,False,False,False,False,False,False]
    #subprogram body
    file = open("suspects.txt","r")
    for i in range(0,9):
        Suspect_name[i],Suspect_age[i],Suspect_motive[i], Suspect_ID[i]=file.readline().split(',')
    return Suspect_name,Suspect_age,Suspect_motive,Suspect_ID,IsMurderer


#randomly assign murderer
readinSuspects()
Murderer = random.randint(0,9)
for i in range(0,9):
    if Murderer == i:
#print Suspect_ID if working
        print(Suspect_ID[i])

另请阅读有关 if __name__ == '__main__': - 这是一个很好的 Python 实践，但没有它它仍然可以工作。在这里您可以阅读如何在 python 中定义全局变量 How to define global variables in python SO

你的代码还有很多需要讨论的地方，但我会让你的老师去做;)