stores xml's root tag

root_tag

def get_root_tag(input_file):
    with open(input_file, 'r', encoding='utf-8') as file:
        file.readline()
        second_line = file.readline().strip()
        root_tag = second_line[1:].split(' ', 1)[0]
    return root_tag[:-1] if root_tag.endswith('>') else root_tag