old_contents: """
  scrapple.utils.exceptions
  ~~~~~~~~~~~~~~~~~~~~~~~~~
  
  Functions related to handling exceptions in the input arguments
  """
  
  import re
  
  
  def handle_exceptions(args):
  	"""
  	Validates the arguments passed through the CLI commands.
  
  	:param args: The arguments passed in the CLI, parsed by the docopt module
  	:return: None
  
  	"""
  	projectname_re = re.compile(r'[^a-zA-Z0-9_]')
  	if args['genconfig']:
  		if args['--type'] not in ['scraper', 'crawler']:
  			raise Exception("--type has to be 'scraper' or 'crawler'")
  		if args['--selector'] not in ['xpath', 'css']:
  			raise Exception("--selector has to be 'xpath' or 'css'")
  	if args['generate'] or args['run']:
  		if args['--output_type'] not in ['json', 'csv']:
  			raise Exception("--output_type has to be 'json' or 'csv'")
  	if args['genconfig'] or args['generate'] or args['run']:
  		if projectname_re.search(args['<projectname>']) is not None:
  			raise Exception("<projectname> should consist of letters, digits or _")
  	return
  
new_contents: """
  scrapple.utils.exceptions
  ~~~~~~~~~~~~~~~~~~~~~~~~~
  
  Functions related to handling exceptions in the input arguments
  """
  
  import re
  
  
  def handle_exceptions(args):
  	"""
  	Validates the arguments passed through the CLI commands.
  
  	:param args: The arguments passed in the CLI, parsed by the docopt module
  	:return: None
  
  	"""
  	projectname_re = re.compile(r'[^a-zA-Z0-9_]')
  	if args['genconfig']:
  		if args['--type'] not in ['scraper', 'crawler']:
  			raise Exception("--type has to be 'scraper' or 'crawler'")
  		if args['--selector'] not in ['xpath', 'css']:
  			raise Exception("--selector has to be 'xpath' or 'css'")
  	if args['generate'] or args['run']:
  		if args['--output_type'] not in ['json', 'csv']:
  			raise Exception("--output_type has to be 'json' or 'csv'")
  	if args['genconfig'] or args['generate'] or args['run']:
  		if projectname_re.search(args['<projectname>']) is not None:
  			raise Exception("<projectname> should consist of letters, digits or _")
  	if int(args['--levels']) < 1:
  		raise Exception("--levels should be greater than, or equal to 1")
  	return
  
subject: Update exception handling for levels argument