def xml_tag_split(tag):
    m = re.match('({([^}]+)})?(.+)', tag)
    groups = m.groups()
    return groups[1], groups[2]
Given a xml node tag, return the namespace and the tag name. The namespace
dataset/ETHPy150Open CenterForOpenScience/pydocx/pydocx/util/xml.py/xml_tag_split