Validating credit card numbers

python
import re

def check(card):
    if not re.search("^[456]\d{3}(-?\d{4}){3}$",card) or re.search(r"(\d)\1{3}", re.sub("-", "",card)):
        return False
    return True

for i in range(int(input())):
    print("Valid" if check(input()) else "Invalid")

Source: thepoorcoder.com

Similar codes

0 vote229 views1 answer
Matlab .* operator in python
Python
3 votes267 views3 answers
Tensorflow to numpy
Python
0 vote239 views1 answer
Modbusfc03 python
Python
0 vote241 views1 answer
Get span text selenium python
Python
0 vote255 views1 answer
Python string and variable in 1 print
Python
0 vote227 views1 answer
Bs4 innerhtml
Python
2 votes245 views1 answer
Max of matrix numpy
Python
23 votes254 views6 answers
Check if a value is nan pandas
Python
2 votes231 views1 answer
Pygame how to regulate fps
Python
0 vote256 views1 answer
TemplateSyntaxError
Python