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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def validate_args(**args):
 	""" 	function to check if input query is not None 	and set missing arguments to default value 	"""

	if not args['query']:
		print("\nMissing required query argument.")
		sys.exit()

	for key in DEFAULTS:
		if key not in args:
			args[key] = DEFAULTS[key]

	return args