analyse_xml.py 文件源码

def get_childnode_value(node_name, parent_node):
    """
    This function gets the node value.

    Parameters
    ----------
    node_name : str
        The name of the node to be retrieved.

    parent_node : xml minidom Node
        The parent node.

    Returns
    -------
    value : str
        The value of the node.
    """
    nodes_list = parent_node.getElementsByTagName(node_name)
    num_nodes = len(nodes_list)

    if num_nodes > 1:
        raise Exception("more than one node!!")
    elif num_nodes == 0:
        raise Exception("no nodes!!")
    else:
        values = []
        for node in nodes_list:
            node_value = ""
            for cnode in node.childNodes:
                if cnode.nodeType == Node.TEXT_NODE:
                    #in case the text node is separated 
                    tvalue = str(cnode.nodeValue)
                    node_value = node_value + tvalue
            values.append(node_value)

    return values[0]