QComboBox does not function properly

[d_stranz]

For each line in the file:
- read the line
- insert it into the combobox

To reinforce what high_flyer is asking, where are you performing the first step in this loop ("read the line")?

And since everything in python depends on indentation, what do you think happens to "tmod" (or "tmodel" - you seem to have not cut and pasted very carefully) after the first time through the for loop?