import re
numberRegex = re.compile(r'(?<!\d)(?<!\d[.,])\d{1,3}(?:,\d{3})*(?![.,]?\d)')
mo = numberRegex.findall('41, 1,234, 6,368,745, 12,34,567, 1234')
print(mo)
aW1wb3J0IHJlCm51bWJlclJlZ2V4ID0gcmUuY29tcGlsZShyJyg/PCFcZCkoPzwhXGRbLixdKVxkezEsM30oPzosXGR7M30pKig/IVsuLF0/XGQpJykKbW8gPSBudW1iZXJSZWdleC5maW5kYWxsKCc0MSwgMSwyMzQsIDYsMzY4LDc0NSwgMTIsMzQsNTY3LCAxMjM0JykKcHJpbnQobW8p