Missing model

[patrickdrouin]

I've been toying with the code (thanks for making it available) and every time I run it, I noticed that I am missing a model. If I run it with the following corpora :
1960.txt
1970.txt
1980.txt
1990.txt
2000.txt

I get this:
1960.txt
1970.txt
1980.txt
2000.txt

I'm always missing the model before the last one. Could this be a problem with this line (205)?
for model in allmodels[:-2]:

I believe it should read

for model in allmodels[:-1]:

Am I missing something?