On Mon, Feb 8, 2016 at 1:51 PM, Victor Stinner
I didn't know. I just checked. It's assert used with a non-empty tuple:
assert ("tuple",)
which is more interesting with a tuple without the parentheses: t = In [*4*]: t = True, In [*5*]: t Out[*5*]: (True,) works fine, but not if you use an assert: In [*7*]: assert True, File "<ipython-input-7-38940c80755c>", line 1 assert True, ^ SyntaxError: invalid syntax I actually like the Warning with the note about the problem better: <stdin>:1: SyntaxWarning: assertion is always true, perhaps remove
parentheses?
And, of course, more relevant with something Falsey in the tuple: In [*14*]: assert (False,) <ipython-input-14-05f425f558c4>:1: SyntaxWarning: assertion is always true, perhaps remove parentheses? assert (False,) But I am curious why you get a different error without the parens? -CHB -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception Chris.Barker@noaa.gov