def METHOD_NAME(self, section: str, tag: str, value):
    """Set the value of a tag in a section.
    Parameters
    ----------
    section : str
        Name of the subsection
    tag : str
        Name of the tag
    value : str
        The value to set
    """
    if section not in self:
        self[section] = {}
    self[section][tag] = value