This issue is fixed in the development version. We are working on a release now and should have a release candidate out by the end of the month.
Aaron Meurer On Thu, Jun 14, 2018 at 11:22 AM will wray <wjw...@gmail.com> wrote: > Same error on all my Sympy notebooks that use init_session(), > using the latest updated Anaconda versions (on Windows). > > Does anyone have a workaround or alternative? > If there is a fix then any idea when it'll arrive in Anaconda? > > Thanks, Will > > > On Sunday, October 1, 2017 at 2:47:08 PM UTC-4, Daniele Nicolodi wrote: >> >> Hello, >> >> I'm trying to use sympy in a Jupyter notebook, however, it seems that >> sympy.init_session() does too much magic. If I call it without >> arguments it fails with this exception: >> >> > >> --------------------------------------------------------------------------- >> > MultipleInstanceError Traceback (most recent call >> last) >> > <ipython-input-15-93c617afb26a> in <module>() >> > ----> 1 sympy.init_session() >> > >> > >> /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/sympy/interactive/session.py >> in init_session(ipython, pretty_print, order, use_unicode, use_latex, >> quiet, auto_symbols, auto_int_to_Integer, str_printer, pretty_printer, >> latex_printer, argv) >> > 431 else: >> > 432 ip = init_ipython_session(argv=argv, >> auto_symbols=auto_symbols, >> > --> 433 auto_int_to_Integer=auto_int_to_Integer) >> > 434 >> > 435 if V(IPython.__version__) >= '0.11': >> > >> > >> /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/sympy/interactive/session.py >> in init_ipython_session(argv, auto_symbols, auto_int_to_Integer) >> > 262 # don't draw IPython banner during initialization: >> > 263 app.display_banner = False >> > --> 264 app.initialize(argv) >> > 265 >> > 266 if auto_symbols: >> > >> > <decorator-gen-112> in initialize(self, argv) >> > >> > >> /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/traitlets/config/application.py >> in catch_config_error(method, app, *args, **kwargs) >> > 85 """ >> > 86 try: >> > ---> 87 return method(app, *args, **kwargs) >> > 88 except (TraitError, ArgumentError) as e: >> > 89 app.print_help() >> > >> > >> /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/terminal/ipapp.py >> in initialize(self, argv) >> > 315 self.init_path() >> > 316 # create the shell >> > --> 317 self.init_shell() >> > 318 # and draw the banner >> > 319 self.init_banner() >> > >> > >> /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/terminal/ipapp.py >> in init_shell(self) >> > 331 self.shell = >> self.interactive_shell_class.instance(parent=self, >> > 332 profile_dir=self.profile_dir, >> > --> 333 ipython_dir=self.ipython_dir, >> user_ns=self.user_ns) >> > 334 self.shell.configurables.append(self) >> > 335 >> > >> > >> /opt/local/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/traitlets/config/configurable.py >> in instance(cls, *args, **kwargs) >> > 421 raise MultipleInstanceError( >> > 422 'Multiple incompatible subclass instances of ' >> > --> 423 '%s are being created.' % cls.__name__ >> > 424 ) >> > 425 >> > >> > MultipleInstanceError: Multiple incompatible subclass instances of >> TerminalInteractiveShell are being created. >> > >> >> IPython is version 6.2.0, Sympy is version 1.1.1. >> >> I tried playing with the ipython argument to init_session() but both >> True and False values did not do much good (did not get something >> usable). The strange thing is that I have a sympy working just fine in >> a Jupyter notebook on a work machine where I use Anaconda (this machine >> uses an macports instead). I don't know if Anaconda patches Sympy >> somehow or if it uses an older version that does not have this problem. >> I can check that tomorrow. >> >> Looking at the code for init_session() it seems that the possibility of >> it being called in an IPython session is not handled. >> >> This bug report is about the same issue: >> >> https://github.com/sympy/sympy/issues/13319 >> >> Thanks. Cheers, >> Daniele >> > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at https://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/a77796dd-f904-4c85-8d13-77e4d41a5808%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/a77796dd-f904-4c85-8d13-77e4d41a5808%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. 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