[issue719888] tokenize module w/ coding cookie

Mark Dickinson report at bugs.python.org
Tue Mar 18 19:01:23 CET 2008


Mark Dickinson <dickinsm at gmail.com> added the comment:

Is it worth keeping generate_tokens as an alias for tokenize, just
to avoid gratuitous 2-to-3 breakage?  Maybe not---I guess they're
different beasts, in that one wants a string-valued iterator and the 
other wants a bytes-valued iterator.

So if I understand correctly, the readline argument to tokenize
would have to return bytes instances.  Would it be worth adding a check
for this, to catch possible misuse?  You could put the check in 
detect_encoding, so that just checks that the first one or two yields
from readline have the correct type, and assumes that the rest is okay.

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