Nathan, On Mon, Oct 7, 2013 at 10:52 PM, Nathan Woods <[email protected]> wrote: > The sympy function (the output of printing the expression) is: > "t*x*y + x**2 + y**2 + Piecewise((0, x < 0.5), (1, x >= 0.5)) + cos(t) - 1" > > The error message is: > > TypeError: unsupported operand type(s) for |=: 'set' and 'Piecewise' > > > The whole error output is: > > Traceback (most recent call last): > File "integration.py", line 201, in <module> > print IntegrableFunction(integrands[0],**test).integrate() > File "integration.py", line 52, in __init__ > sympy_function,self.sympy_variables,args=self.args) > File "integration.py", line 167, in __init__ > argument_sequence=self.sympy_variables,to_files=True) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/utilities/codegen.py", > line 958, in codegen > return code_gen.write(routines, prefix, to_files, header, empty) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/utilities/codegen.py", > line 445, in write > dump_fn(self, routines, f, prefix, header, empty) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/utilities/codegen.py", > line 615, in dump_c > self.dump_code(routines, f, prefix, header, empty) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/utilities/codegen.py", > line 489, in dump_code > code_lines.extend(self._call_printer(routine)) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/utilities/codegen.py", > line 593, in _call_printer > constants, not_c, c_expr = ccode(result.expr, assign_to=assign_to, > human=False) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/printing/ccode.py", > line 262, in ccode > return CCodePrinter(settings).doprint(expr, assign_to) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/printing/ccode.py", > line 87, in doprint > code0 = self._doprint_a_piece(expr, assign_to) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/printing/codeprinter.py", > line 30, in _doprint_a_piece > d = get_contraction_structure(expr) > File > "/Users/woodscn/SCIPYTEST/lib/python2.7/site-packages/sympy/tensor/index_methods.py", > line 401, in get_contraction_structure > result[key] |= d[key] > TypeError: unsupported operand type(s) for |=: 'set' and 'Piecewise'
I see, here is how to reproduce it: https://gist.github.com/certik/6880300 This is definitely a bug. Franz, any idea why it would call the tensor module? Ondrej -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
