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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 get_topic_set(file_path):
 """ Opens one of the topic set resource files and returns a set of topics. - Input: - file_path: The path pointing to the topic set resource file. - Output: - topic_set: A python set of strings. """

    topic_set = set()
    file_row_gen = get_file_row_generator(file_path, ",")  # The separator here is irrelevant.
    for file_row in file_row_gen:
        topic_set.add(file_row[0])

    return topic_set