def write_header(self, g):

        header = Element('graph', {'xmlns': 'http://www.xces.org/ns/GrAF/1.0/'})

        header.append(self.write_header_elements(g))

        return header
Writes the header tag at the beginning of the XML file.
dataset/ETHPy150Open cidles/graf-python/src/graf/io.py/GrafRenderer.write_header