Using Python, it is possible to calculate the ID card number.

Start working.
First, let's take a look at the pictures posted in Li Dawei's Moments.

The personal information exposed in the ticket is:

3302211993****4914 Li Dawei

Only the four digits of the month and date are missing.

So there are a total of 365 possibilities.

Science Popularization Time:#

Based on the first 6 digits of Li Dawei's ID card information "330221"

We can easily obtain:

Li Dawei is from Ningbo, Zhejiang Province, born in 1993.
Let's use Python to generate all the dates in 1993.

import time

# Generate all the dates in the year of birth
def dateRange(year):
    fmt = '%Y-%m-%d'
    bgn = int(time.mktime(time.strptime(year+'-01-01',fmt)))
    end = int(time.mktime(time.strptime(year+'-12-31',fmt)))
    list_date = [time.strftime(fmt,time.localtime(i)) for i in range(bgn,end+1,3600*24)]
    return [i.replace('-','') for i in list_date]

data_time  = dateRange('1993')

Successfully obtained the list of dates.

Then use the verification code calculation rule to reverse verify which date is correct! Write the calculation rule yourself? Too troublesome!
Let me introduce you to a library: id-validator
Installation: pip install id-validator
It can be used to verify the legality of ID card numbers, obtain information about ID card numbers, generate fake data that can pass the verification, and upgrade ID cards.

So we use id-validator to verify the ID card numbers generated just now one by one. The complete code is as follows:

from id_validator import validator
import time

# Generate all the dates in the year of birth
def dateRange(year):
    fmt = '%Y-%m-%d'
    bgn = int(time.mktime(time.strptime(year+'-01-01', fmt)))
    end = int(time.mktime(time.strptime(year+'-12-31', fmt)))
    list_date = [time.strftime(fmt, time.localtime(i))for i in range(bgn, end+1, 3600*24)]
    return [i.replace('-', '') for i in list_date]

# Traverse all dates and print the ID card numbers that pass the verification
def vali_dator(id1, id2, id3):
    for i in dateRange(id2):
        theid = id1 + i + id3
        if validator.is_valid(theid):
            print(theid)

vali_dator('330221','1993','4914')

Running result:

How to pick out Li Dawei's real date of birth from the 33 dates?
Next, we need to filter the final result by matching the ID card number and name. The previous solution was to query on 12306, add a contact on 12306, and if the ID card and name match, it will show that the verification is passed. If it cannot pass, it means that the ID card and name do not match. But now this method cannot be used anymore.

Then I found Alibaba Cloud's real-name authentication interface, which checks whether the identity information matches based on the ID card name and ID card number. But only enterprise users can use it, and individuals cannot, so I won't try it.

Summary#

This is roughly the process of calculating the ID card number using Python. Of course, many people will publicly disclose their birth month and date on QQ or other social software, so it can be easily found.