def section(self, section_title):
    '''
    Get the plain text content of a section from `self.sections`.
    Returns None if `section_title` isn't found, otherwise returns a whitespace stripped string.

    This is a convenience method that wraps self.content.

    .. warning:: Calling `section` on a section that has subheadings will NOT return
           the full text of all of the subsections. It only gets the text between
           `section_title` and the next subheading, which is often empty.
    '''

    section = u"== {} ==".format(section_title)
    try:
      index = self.content.index(section) + len(section)
    except __HOLE__:
      return None

    try:
      next_index = self.content.index("==", index)
    except ValueError:
      next_index = len(self.content)

    return self.content[index:next_index].lstrip("=").strip()
dataset/ETHPy150Open goldsmith/Wikipedia/wikipedia/wikipedia.py/WikipediaPage.section