如何在python字典中有条件值？

我有一个像这样的python字典：

{
"addressLineOne": self.ADDRESS_1,
"addressType": "RESIDENTIAL",
"city": self.CITY,
"countryCode": "USA",
"email": self.EMAIL,
"firstName": self.FIRST_NAME,
"state": self.STATE
}

我希望一些值以我目前正在做的方式为条件，如下所示：

if self.login:
    data = {"addressLineOne": self.ADDRESS_1,
            "addressType": "RESIDENTIAL",
            "city": self.CITY,
            "countryCode": "USA",
            "state": self.STATE}
else:
    data = {"addressLineOne": self.ADDRESS_1,
            "addressType": "RESIDENTIAL",
            "city": self.CITY,
            "countryCode": "USA",
            "email": self.EMAIL,
            "firstName": self.FIRST_NAME,
            "state": self.STATE}

有没有更整洁的方法来做到这一点，所以我不需要两次编写字典，例如在字典中包含一个 if/else 语句？

回答

data = {"addressLineOne": self.ADDRESS_1,
        "addressType": "RESIDENTIAL",
        "city": self.CITY,
        "countryCode": "USA",
        "state": self.STATE}

if not self.login:
    data.update({"email": self.EMAIL,
                 "firstName": self.FIRST_NAME})

回答

data = {
    'this': that,
    'foo': bar,
    **({'cond1': 17, cond2: 'xyzzy'} if new_moon() else {})
}