[C++-sig] With boost python tuple, how to loop over tuple items?

[HOUSSEN Franck]

With boost python tuple, how to loop over tuple items? In dummy.cpp
attached, I'd like to get line 8 to work. Afterwards, I noticed line 7 does
not even compile. How to get the length of a tuple (line 8), and, why there
could be some ambiguity (line 7). Any help / clue is appreciated.
Franck
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