Serhiy Storchaka added the comment:
Interesting, short string literals usually are interned, but they are not
interned in tuple literal.
>>> namespace = {}
>>> exec('a = ["abc123"]\ndef abc123(): pass', namespace)
>>> namespace['abc123'].__name__ is namespace['a'][0]
True
>>> exec('a = ("abc123",)\ndef abc123(): pass', namespace)
>>> namespace['abc123'].__name__ is namespace['a'][0]
False
>>> namespace['abc123'].__name__ == namespace['a'][0]
True
I think it would be better to change the compiler to always intern short string
literals. And patching namedtuple will be not needed.
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nosy: +benjamin.peterson, brett.cannon, georg.brandl, ncoghlan, yselivanov
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<http://bugs.python.org/issue25981>
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