Python-來自另一個列舉的列舉鍵

我有一個帶有以下代碼的列舉類：

# enums.py
class AuthCode(Enum):
    ALREADY_AUTHENTICATED               = 1
    MISSING_EMAIL                       = 2
    MISSING_PASSWORD                    = 3
    MISSING_REGISTRATION_TOKEN_CODE     = 4
    INVALID_EMAIL                       = 5
    REDEEMED_EMAIL                      = 6
    INVALID_PASSWORD                    = 7
    INVALID_REGISTRATION_TOKEN_CODE     = 8
    REDEEMED_REGISTRATION_TOKEN_CODE    = 9
    INVALID_CREDENTIALS                 = 10
    SIGNIN_SUCCESSFUL                   = 11
    REGISTRATION_SUCCESSFUL             = 12

class AuthCodeMessage(Enum):
    AuthCode.ALREADY_AUTHENTICATED              = "User was already logged in"
    AuthCode.MISSING_EMAIL                      = "Email was not specified"
    AuthCode.MISSING_PASSWORD                   = "Password was not specified"
    AuthCode.MISSING_REGISTRATION_TOKEN_CODE    = "Registration token code was not specified"
    AuthCode.INVALID_EMAIL                      = "Email is invalid"
    AuthCode.REDEEMED_EMAIL                     = "An account with this email has been created already"
    AuthCode.INVALID_PASSWORD                   = "Password does not meet minimum password requirements"
    AuthCode.INVALID_REGISTRATION_TOKEN_CODE    = "Registration token code is invalid"
    AuthCode.REDEEMED_REGISTRATION_TOKEN_CODE   = "Registration token code has been redeemed already"
    AuthCode.INVALID_CREDENTIALS                = "Account with these credentials does not exist"
    AuthCode.SIGNIN_SUCCESSFUL                  = "User has been signed in successfully"
    AuthCode.REGISTRATION_SUCCESSFUL            = "User account has been created successfully"

是否可以按照定義的方式定義第二個列舉 (AuthCodeMessage)（即，使用另一個列舉作為鍵）。如何檢索列舉值？

編輯 1：我想使用類似于以下的方法從我的代碼中呼叫我的列舉：

from enums import AuthCode, AuthCodeMessage

def authResponse(authCode):
    AuthCode.ALREADY_AUTHENTICATED
    return jsonify({
        "code": authCode,
        "message": AuthCodeMessage.authCode
    })

authResponse(AuthCode.ALREADY_AUTHENTICATED)

uj5u.com熱心網友回復：

您真正想要的是將AuthCodes映射到字串。在 Python 中執行此操作的常用方法是使用字典，如下所示：

AUTHCODE_MESSAGES = {
    AuthCode.ALREADY_AUTHENTICATED: "User was already logged in",
# copy the rest of the code/message pairs here
# make sure to replace the = with :
# and add a , on the end of every line
}

然后你可以像這樣使用它：

# FIXME: enums is not a very clear name for what it does.
from enums import AuthCode, AUTHCODE_MESSAGES

def authResponse(authCode):
    return jsonify({
        "code": authCode,
        "message": AUTHCODE_MESSAGES[authCode]
    })

uj5u.com熱心網友回復：

而不是使用兩個列舉，只需使用一個。使用檔案中的AutoNumber 配方（第二個），您的代碼將如下所示：

class AuthCode(AutoNumber):
    ALREADY_AUTHENTICATED   = "User was already logged in"
    MISSING_EMAIL           = "Email was not specified"
    MISSING_PASSWORD        = "Password was not specified"
    ...
    
    def __init__(self, description):
        self.description = description

后來：

def authResponse(authCode):
    return jsonify({
        "code": authCode.value,
        "message": authCode.description,
    })

——

披露：我是Python stdlibEnum、enum34backport和Advanced Enumeration ( aenum) 庫的作者。

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