On 2006-12-06 10:26, Fredrik Lundh wrote:
over at my work copy of the python language reference, Adrian Holovaty asked about the exact semantics of the __str__ hook:
http://effbot.org/pyref/__str__
"The return value must be a string object." Does this mean it can be a *Unicode* string object? This distinction is ambiguous to me because unicode objects and string objects are both subclasses of basestring. May a __str__() return a Unicode object?
I seem to remember earlier discussions on this topic, but don't recall when and what. From what I can tell, __str__ may return a Unicode object, but only if can be converted to an 8-bit string using the default encoding. Is this on purpose or by accident? Do we have a plan for improving the situation in future 2.X releases ?
This was added to make the transition to all Unicode in 3k easier: .__str__() may return a string or Unicode object. .__unicode__() must return a Unicode object. There is no restriction on the content of the Unicode string for .__str__(). -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Dec 06 2006)
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