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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 build_suite(args):
 """Build a test suite by loading TAP files or a TAP stream."""

    loader = Loader()
    if len(args.files) == 0 or args.files[0] == "-":
        suite = loader.load_suite_from_stdin()
    else:
        suite = loader.load(args.files)
    return suite