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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 read_file(*relative_path_elements):
 """ Return content of a file relative to this ``setup.py``. """

    file_path = path.join(path.dirname(__file__), *relative_path_elements)
    return io.open(file_path, encoding='utf8').read().strip()