It's supposed to ask whether user wants to write log again (if log is found incomplete).

How can I add such interactivity ?

All I get is:

Traceback (most recent call last):
File "/home_local/samiviit/CVS/script/environ_test.py", line 18, in ?
rerun = input('Haluatko tayttaa lokin uudelleen y/n? ')
EOFError: EOF when reading a line