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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 ToDebugString(self):
 """Converts the path filter table into a debug string."""

    text_parts = ['Path segment index\tPath segments(s)']
    for index, path_segments in self.path_segments_per_index.items():
      text_parts.append('{0:d}\t\t\t[{1:s}]'.format(
          index, ', '.join(path_segments)))

    text_parts.append('')

    return '\n'.join(text_parts)