[issue16917] Misleading missing parenthesis syntax error

2013-01-11 Thread Dražen Lučanin
Dražen Lučanin added the comment: Yes, I see your point. Well, for now I am voting for issue1634034 to get some sort of resolution, as Serhiy mentioned, as it might help this scenario as well. Cheers! On Thu, Jan 10, 2013 at 4:29 PM, Ezio Melotti rep...@bugs.python.org wrote: Ezio Melotti

[issue16917] Misleading missing parenthesis syntax error

2013-01-10 Thread Dražen Lučanin
New submission from Dražen Lučanin: When running this script: things = ['a', 'b'] things.append('c' for a in things: print a I get the following output: $ python script.py File script.py, line 3 for a in things: ^ SyntaxError: invalid syntax the SyntaxError is

[issue16917] Misleading missing parenthesis syntax error

2013-01-10 Thread Dražen Lučanin
Changes by Dražen Lučanin kermit...@gmail.com: -- type: compile error - behavior ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16917 ___ ___

[issue16917] Misleading missing parenthesis syntax error

2013-01-10 Thread Ezio Melotti
Ezio Melotti added the comment: The colon is the first invalid char, for example this is valid python and works: things = ['a', 'b'] things.append('c' ... for a in things) things ['a', 'b', generator object genexpr at 0xb76dacfc] In your case Python expects a genexp like things.append('c'

[issue16917] Misleading missing parenthesis syntax error

2013-01-10 Thread Mark Dickinson
Mark Dickinson added the comment: The error is in a missing parenthesis after the append call Well, that's one *possible* cause of the error. But fixing that missing parenthesis isn't the only way to make the code correct, and Python doesn't have any reasonable way to guess which of the

[issue16917] Misleading missing parenthesis syntax error

2013-01-10 Thread Serhiy Storchaka
Serhiy Storchaka added the comment: For better syntax error messages see issue1634034. -- nosy: +serhiy.storchaka ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16917 ___

[issue16917] Misleading missing parenthesis syntax error

2013-01-10 Thread Dražen Lučanin
Dražen Lučanin added the comment: Yes, sure, I agree with both comments. Fors are a bit disambiguous in this context in comparison to while loops. But something in the style of Ezio's explanation might come in handy in the error output. e.g. SyntaxError: invalid syntax. , or ) expected in the

[issue16917] Misleading missing parenthesis syntax error

2013-01-10 Thread Ezio Melotti
Ezio Melotti added the comment: This would all be a bit simpler if an indent was obligatory after inserting a newline in the middle of a command. This is not such a bad idea, but it is not backward-compatible and it would be inconsistent with how parentheses works in other situations.