[issue21669] Custom error messages when print & exec are used as statements

[Guido van Rossum]

Guido van Rossum added the comment:

I'm sorry, but I find this way too intrusive, and a little risky too (I'm not sure how to verify even that the new parser accepts exactly the same set of programs as the old version).

I would much prefer a solution to this particular issue along the lines of a heuristic based on detecting whether the line where the syntax error occurs starts with the token 'print' or 'exec' followed by anything except a left parenthesis.

Such a heuristic could also be added to 3.4.

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<http://bugs.python.org/issue21669>
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