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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_data(file_path):
 """ Reads a file and returns a json encoded representation of the file. """


    if not is_valid(file_path):
        write_data(file_path, {})

    db = open_file_for_reading(file_path)
    content = db.read()

    obj = decode(content)

    db.close()

    return obj