On Sun, Apr 10, 2016, at 05:48 PM, Fillmore wrote: > On 04/10/2016 08:31 PM, Ben Finney wrote: > > Can you describe explicitly what that “discontinuation point” is? I'm > > not seeing it. > > Here you go: > > >>> a = '"string1"'
Here, "a" is a string that contains a double quoted string. So if you evaluate it, you get a string. > >>> b = '"string1","string2"' Here, "b" is a string that contains two double quoted strings separated by a comma. So if you evaluate it, you get a tuple of two strings. > >>> c = '"string1","string2","string3"' This is as above, but with three items. With that in mind: > >>> ea = eval(a) > >>> eb = eval(b) > >>> ec = eval(c) > >>> type(ea) > <class 'str'> > >>> type(eb) > <class 'tuple'> > >>> type(ec) > <class 'tuple'> This should all be expected. The commas, when you evaluate them, are in B&C making tuples. There's only a single string in A, so you get a string. If you wanted a one item tuple, you would have written: >>> a = '"string1",' Note the trailing comma. > I can tell you that it exists because it bit me in the butt today... > > and mind you, I am not saying that this is wrong. I'm just saying that it > surprised me. If the above doesn't explain it, then I still don't understand what you're finding surprising and what you'd expect otherwise. ---Stephen m e @ i x o k a i . i o -- https://mail.python.org/mailman/listinfo/python-list
