使用存储在 python 列表中的嵌套字典中的值验证作为用户输入的出生日期

Question

我正在尝试验证从用户那里获取的出生日期并将其与存储在字典数据库中的值进行比较。但即使我输入了正确的出生日期值，它也不会验证该值。这是我的代码：

from collections import defaultdict



accountDetails = [
    {"FirtsName": "JOHN", "LastName": "DENIS","date of Birth": "01-06-1992", "Account Number": "432524352345234", "Account Balance": "50000"},
    {"FirtsName": "AKASH", "LastName": "MAHAJAN", "date of Birth": "04-02-1995","Account Number": "432524352345234", "Account Balance": "50000"},
    {"FirtsName": "AMAN", "LastName": "RANA","date of Birth": "11-04-1996", "Account Number": "432524352345234", "Account Balance": "50000"},
    {"FirtsName": "ANKUR", "LastName": "JAIN","date of Birth": "21-05-1990", "Account Number": "432524352345234", "Account Balance": "50000"},
]


d = defaultdict(lambda: defaultdict(dict))
for item in accountDetails:
    d[item['FirtsName']][item['LastName']][item['date of Birth']] = item

# get valid first name
while True:
    first_name_input = input('Enter First Name:\n').upper()
    if first_name_input in d:
        break
    else:
        print('Enter valid First Name')

# get valid last name
while True:
    last_name_input = input('Enter Last Name:\n').upper()
    if last_name_input in d[first_name_input]:
        break
    else:
        print('Enter valid Last Name')
                         # get valid last name
while True:
    dob_input = input('Enter dob:\n')
    if  dob_input in d[first_name_input]:
        break
    else:
        print('Enter valid dob')


print(d[first_name_input][last_name_input])

用户输入的值为-04-02-1995

Answer 1

您需要在嵌套字典的 second 级别测试键：

while True:
    dob_input = input('Enter dob:\n')
    if dob_input in d[first_name_input][last_name_input]:
        break
    else:
        print('Enter valid dob')

当您 print 您创建的嵌套字典的结构时，这就变得很清楚了：

print(d)

defaultdict(<function __main__.<lambda>>,
            {'AKASH': defaultdict(dict,
                         {'MAHAJAN': {'04-02-1995': {'Account Balance': '50000',
                            'Account Number': '432524352345234',
                            'FirtsName': 'AKASH',
                            'LastName': 'MAHAJAN',
                            'date of Birth': '04-02-1995'}}}),
             ...
             'JOHN': defaultdict(dict,
                         {'DENIS': {'01-06-1992': {'Account Balance': '50000',
                            'Account Number': '432524352345234',
                            'FirtsName': 'JOHN',
                            'LastName': 'DENIS',
                            'date of Birth': '01-06-1992'}}})})

使用存储在 python 列表中的嵌套字典中的值验证作为用户输入的出生日期

Verify the date of birth taken as user input with the value stored in nested dictionary in a list in python

python

dictionary

list

defaultdict