On Tue, Nov 4, 2014 at 4:39 AM, Matthias Filez
Dear mailing list user,
When running an example file of Larch-0.9.24 with Python2 on Ubuntu x86_64, the following error was reported. File "Py_usinglarch.py", line 32, in <module> autobk(xafsdat.energy, xafsdat.mu, rbkg=1.0, _larch=my_larch) File "/usr/local/lib/python2.7/dist-packages/larch/__init__.py", line 37, in wrapper return fcn(*args, **keywords) File "/usr/share/larch/plugins/xafs/autobk.py", line 187, in autobk fit.leastsq() File "/usr/local/lib/python2.7/dist-packages/larch/fitting/minimizer.py", line 395, in leastsq lsout = leastsq(self.__residual, self.vars, **lskws) File "/usr/local/lib/python2.7/dist-packages/larch/fitting/minimizer.py", line 222, in leastsq shape, dtype = _check_func('leastsq', 'func', func, x0, args, n) ValueError: need more than 1 value to unpack
Is Larch-0.9.24 compatible with Python2 on Ubuntu x86_64? If not, what packages and dependencies could we install to make it work on Python2? Or is Larch-0.9.24 only compatible with Python3?
Many thanks in advance, Matthias
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It would be helpful to post the full example script. Larch definitely runs with Python2 on all Linux platforms (and Windows and Mac OSX). Testing with Python3 is minimal, and the graphics libraries will probably need significant work to get working with Python3. So, it *should* work. I can't tell what might be wrong just from the traceback (perhaps there is no actual data in those arrays?). But, the script below does work for me. --Matt # from larch import Interpreter, use_plugin_path use_plugin_path('xafs') from pre_edge import pre_edge from autobk import autobk use_plugin_path('io') from columnfile import _read_ascii my_larch = Interpreter() fname = 'examples/xafsdata/cu_rt01.xmu' cu = _read_ascii(fname, labels='energy mu i0', _larch=my_larch) print 'Read ASCII File:', cu print dir(cu) pre_edge(cu, _larch=my_larch) print 'After pre-edge:' print dir(cu) autobk(cu, rbkg=1.0, kweight=1, _larch=my_larch) # or # autobk(cu.energy, cu.mu, group=cu, rbkg=1.0, kweight=1, _larch=my_larch) print 'After autobk:' print dir(cu) print cu.chi ##########