Python minidom 生成 xml 时候的多余空行（blank lines）处理

from xml.dom inport minidom

def fixed_writexml(self, writer, indent="", addindent="", newl=""):
    # indent = current indentation
    # addindent = indentation to add to higher levels
    # newl = newline string
    writer.write(indent+"<" + self.tagName)

    attrs = self._get_attributes()
    a_names = attrs.keys()
    a_names.sort()

    for a_name in a_names:
        writer.write(" %s=\"" % a_name)
        minidom._write_data(writer, attrs[a_name].value)
        writer.write("\"")
    if self.childNodes:
        if len(self.childNodes) == 1 \
          and self.childNodes[0].nodeType == minidom.Node.TEXT_NODE:
            writer.write(">")
            self.childNodes[0].writexml(writer, "", "", "")
            writer.write("%s" % (self.tagName, newl))
            return
        writer.write(">%s"%(newl))
        for node in self.childNodes:
            if node.nodeType is not minidom.Node.TEXT_NODE:
                node.writexml(writer,indent+addindent,addindent,newl)
        writer.write("%s%s" % (indent,self.tagName,newl))
    else:
        writer.write("/>%s"%(newl))
# replace minidom