有没有办法通过声明构成其键值对的变量来创建字典？

Question

我有一本包含唯一 ID、姓名和生日的字典。这本字典就像一个生日数据库，我的挑战是我不知道如何在其中放入多个 ID。db = {"id": 1, "fn": "JM", "ln" : "Cruz", "dob": "October 5, 1980"}db1 = {"id": 2, "fn": "JD", "ln" : "Castillo", "dob": "August 18, 1979"}db2 = {"id": 3, "fn": "Maria", "ln" : "Torres", "dob": "August 3, 1992"}print("ID: " + str(db["id"]))print("Full Name: " + db["fn"] + " " + db["ln"])print("Birthday: " + db["dob"])print("----------------------")print("ID: " + str(db1["id"]))print("Full Name: " + db1["fn"] + " " + db1["ln"])print("Birthday: " + db1["dob"])print("----------------------")print("ID: " + str(db2["id"]))print("Full Name: " + db2["fn"] + " " + db2["ln"])print("Birthday: " + db2["dob"])print("----------------------")在上面的代码中，您会注意到我必须重复创建字典才能枚举多组 ID、姓名和生日。有没有办法将这些键转换为变量，并给出相同的输出？

Answer 1

你可以简单地使用一个列表来达到这个目的

dblist = []

dblist.append( {"id": 1, "fn": "JM", "ln" : "Cruz", "dob": "October 5, 1980"})

dblist.append( {"id": 2, "fn": "JD", "ln" : "Castillo", "dob": "August 18, 1979"})

dblist.append({"id": 3, "fn": "Maria", "ln" : "Torres", "dob": "August 3, 1992"})

for db in dblist:

    print("ID: " + str(db["id"]))

    print("Full Name: " + db["fn"] + " " + db["ln"])

    print("Birthday: " + db["dob"])

    print("----------------------")

输出

ID: 1

Full Name: JM Cruz

Birthday: October 5, 1980

----------------------

ID: 2

Full Name: JD Castillo

Birthday: August 18, 1979

----------------------

ID: 3

Full Name: Maria Torres

Birthday: August 3, 1992

----------------------

Answer 2

您只能创建一个dict，并且密钥是用户 ID。其他信息如“fn, ln, dob”可能在列表中。您将按特定顺序附加这 3 个信息，以便您可以从列表中检索任何必要的信息。

样本：

db = {"1" : [fn1, ln1, dob1], "2": [fn2, ln2, dob2]}

Answer 3

db = [{"id": 1, "fn": "JM", "ln" : "Cruz", "dob": "October 5, 1980"}, {"id": 2, "fn": "JD", "ln" : "Castillo", "dob": "August 18, 1979"}, {"id": 3, "fn": "Maria", "ln" : "Torres", "dob": "August 3, 1992"}]

for i in db:

    print(f"ID: {i['id']}\nFull Name: {i['fn']} {i['ln']}\nBirthday: {i['dob']}\n{'-' * 22}")

或者你可以“玩”拆包：

for i in db:

    print("ID: {}\nFull Name: {} {}\nBirthday: {}\n".format(*i.values()) + "-" * 22)