Comment by necovek
There is a log message that won't be output in that case: whether getting a full, "native" FileNotFound exception is better is beside the point, since the goal of the code was obviously to print a custom error message.
And it's trivial to achieve the desired effect sanely:
try:
with open(...) ...
except FileNotFound:
logger.error(...)
raise
Or even fewer by doing it in a global exception handler instead of every time you try to open a file, since all your doing is piping the error though logger.