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"""
:Author: Daniel Mohr
:Email: daniel.mohr@dlr.de
:Date: 2021-02-08 (last change).
:License: GNU GENERAL PUBLIC LICENSE, Version 3, 29 June 2007.
"""
import argparse
import os.path
def check_arg_file(data):
"""
:Author: Daniel Mohr
:Email: daniel.mohr@dlr.de
:Date: 2021-01-29 (last change).
"""
if not os.path.isfile(data):
msg = '"%s" is not a file' % data
raise argparse.ArgumentTypeError(msg)
return data
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