comparing two xml files irrespective of their order

I am currently working on a python project and stuck in one little problem related to comparison of two XML files using python. Now for instance assume that we have two xml files:

A file:

<m1:time timeinterval="5">
   <m1:vehicle distance="40" speed="5"\>

   <m1:location hours = "1" path = '1'\>
      <m1:feature color="2" type="a">564</m1:feature>
      <m1:feature color="3" type="b">570</m1:feature>
      <m1:feature color="4" type="c">570</m1:feature>
   <\m1:location>

   <m1:location hours = "5" path = '1'\>
      <m1:feature color="6" type="a">560</m1:feature>
      <m1:feature color="7" type="b">570</m1:feature>
      <m1:feature color="8" type="c">580</m1:feature>   
   <\m1:location>

   <m1:location hours = "9" path = '1'\>
      <m1:feature color="10" type="a">560</m1:feature>
      <m1:feature color="11" type="b">570</m1:feature>
      <m1:feature color="12" type="c">580</m1:feature>   
   <\m1:location>
</m1:time>

B file:

<m1:time timeinterval="6">
   <m1:vehicle distance="40" speed="5"\>

   <m1:location hours = "5" path = '1'\>
      <m1:feature color="6" type="a">560</m1:feature>
      <m1:feature color="7" type="b">570</m1:feature>
      <m1:feature color="8" type="c">580</m1:feature>   
   <\m1:location>

   <m1:location hours = "1" path = '1'\>
      <m1:feature color="2" type="a">564</m1:feature>
      <m1:feature color="3" type="b">570</m1:feature>
      <m1:feature color="4" type="c">570</m1:feature>
   <\m1:location>

   <m1:location hours = "9" path = '1'\>
      <m1:feature color="10" type="a">560</m1:feature>
      <m1:feature color="11" type="b">570</m1:feature>
      <m1:feature color="12" type="c">580</m1:feature>   
   <\m1:location>

</m1:time>

The thing which i want to ask is how to compare A file with B file making sure that though the order of "location" element is different in both the files, still they are same. I have tried all kinds of approach and also tried referring to this question, but in this project i want to develop an approach of my own and I cant use any already available tools.

The approach which I have tried so far is:

I am working with LXML and I am getting the individual attributes of children from A file and storing them in list. then I am comparing B file's elements and children attributes with the values stored in that list.

First all, this approach is not working and neither I am able to think of any efficient procedure to accomplish this task. Can you guys shed some light over this?

Thank you.