Re: [Python-Dev] [Python-checkins] cpython (3.3): - Issue #16514: Fix regression causing a traceback when sys.path[0] is None

On Nov 20, 2012, at 05:35 PM, Terry Reedy wrote:

On 11/20/2012 3:35 PM, barry.warsaw wrote:

...

for entry in path: + if not isinstance(entry, (str, bytes)): + continue

Given that a non-(str,bytes) entry could indicate a programming error, should a warning be emitted before continuing?

That's not what happens in Python 3.2. In fact, this bug report was triggered by someone who was already inserting None to sys.path[0]. It is silently ignored in Python 3.2, but tracebacked in 3.3. Cheers, -Barry