Windows command line problem

[MarkE]

This was discovered after consultation with a colleague who shall
remain nameless but, well, nailed it basically.
The answer appears to be:
An example command line for running the script was written in a word
document. The "Autocorrect" (sic) feature in word replaces a normal
dash at least as I know it with the character Jeff Epler showed above,
u'\N{en dash}' which is a nice big long dash in the Arial font.

If you cut and paste that onto the command line, bad things can happen
although when I do this on my machine I actually get a "u" with an "^"
on top. For whatever reason it must have looked ok on my colleagues
machine (or possibly this isn't the answer but I seriously doubt that)
and when he ran the Python script things went awry.

Thanks Jeff (and nameless colleague). And beware Word autocorrection.