[issue13703] Hash collision security issue

[Gregory P. Smith]

Gregory P. Smith <greg at krypto.org> added the comment:

Should -R be required to take a parameter specifying "on" or "off" so
that code using a #! line continues to work as specified across the a
change in default behavior when upgrading from 3.2 to 3.3?

#!/usr/bin/python3 -R on
#!/usr/bin/python3 -R off

In 3.3 it would be a good idea to have a command line flag to turn
this off.  Rather than introducing a new flag in 3.3 a parameter that
is specific without regards for the default avoids that entirely.

before anyone suggests it: I do *not* think -R should accept a value
to use as the seed.  that is unnecessary.

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<http://bugs.python.org/issue13703>
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