if not re.match(regex, value):
print('Error: %s name should be started with letters and should not '
'contain invalid characters.\n'
- 'It may contain letters, numbers, blank spaces and underscores\n'
+ 'It may contain lowercase letters, numbers, blank spaces and '
+ 'underscores\n'
'Sample: %s' % (descrpt, sample))
sys.exit(6)