import re

regex = r'\d-\d{4}-\d{4}-\d'

preg = re.compile(regex)

s1 = '9-9715-0210-0'
s2 = '997-150-210-0'

m1 = preg.match(s1)
m2 = preg.match(s2)

if m1:
	print('String s1 is valid')
else:
	print('String s1 is invalid')
	
if m2:
	print('String s2 is valid')
else:
	print('String s2 is invalid')