get_new_filename.py
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	# Copyright (C) 2018 by the RROMPy authors
	#
	# This file is part of RROMPy.
	#
	# RROMPy is free software: you can redistribute it and/or modify
	# it under the terms of the GNU Lesser General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.
	#
	# RROMPy is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU Lesser General Public License for more details.
	#
	# You should have received a copy of the GNU Lesser General Public License
	# along with RROMPy. If not, see <http://www.gnu.org/licenses/>.
	#

	import os
	import time

	__all__ = ['getNewFilename']

	def getNewFilename(prefix : str = "", extension : str = "dat",
	timestamp : bool = True) -> str:
	extra = ""
	if timestamp: extra = time.strftime("_%y-%m-%d_%H:%M:%S", time.localtime())
	filenameBase = "{}{}.{}".format(prefix, extra, extension)
	idx = 0
	filename = filenameBase
	while os.path.exists(filename):
	idx += 1
	filename = filenameBase + "{}".format(idx)
	return filename