Questionable auto-correction in transmission_main_example.py

[ggrammel]

Is this really the intended behaviour?

python transmission_main_example.py CORONET_Global_Topology.xls z z

<snip>

(Invalid source node 'z' replaced with trx Zurich)
(Invalid destination node 'z' replaced with trx Abilene)

I get that one would like to be tolerant against typos, but this goes a bit too far.

• My preference is to simply throw an error message if the two Transponders do not exist
• In case the team still want to maintain the auto-correction, there should be an option --strict to ensure consistency when desired
• even in the auto-correction case I would suggest to ensure that at least the initial letter of the location is the same. Resolving 'z' to Zurich looks OK, but resolving the second 'z' to Abilene is a bit much.

[ojnas]

This was discussed before in #130, see this comment and comments below it. As you can see in that discussion, I tend to agree with you that the current auto-correction goes a bit to far. A --strict option seems like a good idea.