New submission from Kay Hayen:
Consider this:
def defaultKeepsIdentity(arg = "str_value"):
print(arg is "str_value")
defaultKeepsIdentity()
This has been outputing "True" on every Python release I have seen so far, but
not so on 3.6.0a4. Normally string values come from a "co_const" and will be
"is" identical if used as literals in a module, but no longer in this case.
This seems wasteful at best, needlessly increasing the number of strings in
usage.
Yours,
Kay
----------
components: Interpreter Core
messages: 274257
nosy: Kay.Hayen
priority: normal
severity: normal
status: open
title: Default value identity regression
type: resource usage
versions: Python 3.6
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Python tracker <[email protected]>
<http://bugs.python.org/issue27942>
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