As follows:
def verify(numbers: str):
? """
Verify the correctness of the 8-digit credit card number
:param numbers: a string of 8 digits
:return:
"""
< p>assert len(numbers) == 8, "Please enter the 8-digit string"
numbers_list = [int(x) for x in numbers] ?# [1 , 2, 3, 4, 5, 6, 7, 8]
# Starting from the rightmost number, add every other number
sum1 = sum(numbers_list[::-2])
# Multiply each digit by 2
time2 = [str(x * 2) for x in numbers_list[-2::-2]]
# Add each digit
time2_str = "".join(time2) ?# "141062"
sum2 = 0
p>
for i in time2_str:
sum2 += int(i)
# Combine the above two steps Add the obtained values
sum3 = sum1 + sum2
# If the single digit of the result is 0, then the input The credit card number is valid
if sum3 % 10 == 0:
return True
else:
return False
verify("12345678")
Introduction
The Python interpreter is easily extensible with new functions and data types using C or C++ (or other languages ??callable from C). Python can also be used as an extension programming language in customizable software. Python's rich standard library provides source code or machine code suitable for each major system platform. ?
In October 2021, Tiobe, the compiler of the Language Popularity Index, crowned Python as the most popular programming language, placing it above Java, C, and JavaScript for the first time in 20 years.