Terry J. Reedy added the comment:
> [2.7] print() implicitly converts str and bytearray subclasses to str and
> left unicode subclasses as is.
This strikes me as possibly a bug in print, but even if that were changed,
there is still the issue of sys.stdout.write and pickle. While the patch is a
great improvement, it changes the behavior of sys.stdout.write(s), which acts
like it calls str.__str__(s) rather than str(s) == s.__str__
---
class S(str):
def __str__(self):
return 'S: ' + str.__str__(self)
s = S('foo')
print(s, str(s), str.__str__(s))
import sys
sys.stdout.write(s)
---
S: foo S: foo foo
foo
on the console (hang after first line on Idle)
I am testing the patch with str(s) changed to str.__str__(s).
----------
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<http://bugs.python.org/issue19481>
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