On 27.06.12 14:22, Stefan Behnel wrote:
For comparison, the revival of the "u" string prefix in Py3.3 is a simple change in the parser grammar that's easy to maintain but that has a huge impact on the Py3 compatibility of code that accepts to drop support for Py2.5 and earlier (as well as Py3.[012]) but wants to keep working in Py2.[67] (which supports the opposite "b" prefix).
And even this simple change has caused unexpected issues (see issues #15054 and #15096), which were not predicted by the preceding stormy discussion. IMHO, the negative consequences of this change are undervalued.
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