[Bomberofdoom]

I wasn't able to spot the problem exactly, but try to check your objects' values (print them to the interactive shell) just before/after you repr/eval them, and try to see if there was some sort of mistake in there.

Aside from that, here are a couple of tips you might wanna' use to better you program's performance a bit, and make it easier to use:

Enums:
You have yet to represent the type of robot in your outputs, such as prettyfiy(), but I already see that you defined the member robotType as a numeric one, so just in case you'll want to represnt the robot's type in text and not in numbers, you could use enums for that:

Taken from http://stackoverflow.com/questions/3...enum-in-python

def enum(**enums):
    return type('Enum', (), enums)

Used like so:

>>> Numbers = enum(ONE=1, TWO=2, THREE='three')
>>> Numbers.ONE
1
>>> Numbers.TWO
2
>>> Numbers.THREE
'three'

You can also easily support automatic enumeration with something like this:

def enum(*sequential, **named):
    enums = dict(zip(sequential, range(len(sequential))), **named)
    return type('Enum', (), enums)

Used like so:

>>> Numbers = enum('ZERO', 'ONE', 'TWO')
>>> Numbers.ZERO
0
>>> Numbers.ONE
1

Len(object):

The Len method is used to get the length of an object holding a collection. e.g, a string can be a collection (a collection of single strings or "chars" appended).
You could use it to return the count of items in your list, like this:

def countListElements(lists):
    return len(lists)
    # if you use this method only for the toCommit list, do it like this:
    # return len(self.toCommit)

Keep us updated on how the program is progressing.