Question: Is there's a way to get the indices properly from a Pymel/Maya API function?

I know Pymel has a function called `getEdges()` however according to their docs this get's them from the selected face, however I just need them from the selected edges.

Is this possible?

Answer: 
While your answer will work theodox, I did find a much simpler resolution, after some serious digging!

Turns out, hiding and not very well documented, was a function ironically called `indices()`, I did search for this but nothing came up in the docs. 

**Pymel**

`selection[0].indices()[0]` 

The above will give us the integer of the selected edge. Simple and elegant!
Do you mean you just the expanded list of selected edges? That's just FilterExpand -sm 32 or cmds.filterExpand(sm=32) or pm.filterExpand(sm=32) on an edge selection. Those commands are always strings, you grab the indices out them with a regular expression:

```
# where objs is a list of edges, for example cmds.ls(sl=True) on an edge selection
cList = "".join(cmds.filterExpand( *objs, sm=32))
outList = set(map ( int, re.findall('\[([0-9]+)\]', cList ) ) ) 

```

which will give you a set containing the integer indices of the edges (I use sets so its easy to do things like find edges common to two groups without for loops or if tests)