text: import re
  import sys
  
  MODULE_REGEX = r"^[a-zA-Z][_a-zA-Z0-9]+$"
  module_name = "{{ cookiecutter.repo_name }}"
  
  if not re.match(MODULE_REGEX, module_name):
      print("ERROR: %s is not a valid Python module name!" % module_name)
      sys.exit(1)
  