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Re: [python-control-announce] Control/slycot with Python 3.6
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From: Richard M. <mu...@cd...> - 2017-04-09 12:34:32
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We haven’t yet tested the python-control package using Python 3.6, so there are no pre-compiled versions of the slycot or controls packages on the conda server, which is what I think is causing the problem. I did a clean python3.6 installation using conda to see if things work. It looks like I get numpy 1.12 (instead of 1.9) and so maybe also be part of the problem in the errors below. However, moving past that problem I get the following error: > (py36test) bash-3.2$ conda install -c python-control -c cyclus slycot control > Fetching package metadata ........... > Solving package specifications: .... > > > UnsatisfiableError: The following specifications were found to be in conflict: > - python 3.6* > - slycot As mentioned, this is because slycot (and python-control) haven’t yet been compiled for Python 3.6 => they are not on the conda server. A couple of options: * Use Python 3.5 * Install slycot and control using pip (I just tried it and that works). This requires that you have a FORTRAN compiler. * If you don’t have a FORTRAN compiler, some parts of python-control will work without slycot. You still need to use pip to install the control package, though. Hope that helps. -richard > On Apr 9, 2017, at 05:17, Vincent R. <vor...@ya...> wrote: > > Hello, > > I'm tying to install the Python Control System Library, to test it as a matlab replacement for my students. > I use Linux, and the Anaconda distribution : python 3.6 for a 64bit system. > When i try to install control following instructions on the website, i get this error message : > ~/anaconda3/bin $ ./conda install -c python-control -c cyclus slycot control > Fetching package metadata ............. > Solving package specifications: . > > UnsatisfiableError: The following specifications were found to be in conflict: > - control -> numpy 1.9* -> python 2.6* -> openssl 1.0.1* > - python 3.6* > Use "conda info <package>" to see the dependencies for each package. > > Do have i to wait for a new version of the package, or do you know of a workaround ? > > Thanks > V.R. > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot_______________________________________________ > python-control-announce mailing list > pyt...@li... > https://lists.sourceforge.net/lists/listinfo/python-control-announce |
