Sorry for my previous post, I hadn't seen pierre-yves'answer. So the only information missing is matploblib/pyserial version numbers. And also a code snippet for the hang pb, if possible. Thanks again, -- Sylvain Thénault LOGILAB, Paris (France) Formations Python, Debian, Méth. Agiles: http://www.logilab.fr/formations Développement logiciel sur mesure: http://www.logilab.fr/services CubicWeb, the semantic web framework: http://www.cubicweb.org
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