---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
<ipython-input-18-05fc00ac7b29> in <module>()
----> 1 (sph3d,er,eth,ephi) = Ga.build('e_r e_theta e_phi',g=[1,r**2,(r*sin(th))**2], coords=coords, norm=True)
/usr/local/lib/python2.7/dist-packages/sympy-0.7.5_git-py2.7.egg/sympy/galgebra/ga.pyc in build(*kargs, **kwargs)
168 algebra, basis vectors, and grad operator as a tuple.
169 """
--> 170 GA = Ga(*kargs, **kwargs)
171 basis = list(GA.mv())
172 return tuple([GA] + basis)
/usr/local/lib/python2.7/dist-packages/sympy-0.7.5_git-py2.7.egg/sympy/galgebra/ga.pyc in __init__(self, bases, **kwargs)
226 if self.coords is not None:
227 self.coord_vec = sum([coord * base for (coord, base) in zip(self.coords, self.basis)])
--> 228 self.build_reciprocal_basis(self.gsym)
229 self.Pdop_identity = mv.Pdop({},ga=self) # Identity Pdop = 1
230 self.Pdiffs = {}
/usr/local/lib/python2.7/dist-packages/sympy-0.7.5_git-py2.7.egg/sympy/galgebra/ga.pyc in build_reciprocal_basis(self, gsym)
1240 rx_j = self.r_symbols[j]
1241 if j >= i:
-> 1242 g_inv[i, j] = self.dot(self.r_basis_dict[rx_i], self.r_basis_dict[rx_j])
1243 if not self.is_ortho:
1244 g_inv[i, j] /= self.inorm
/usr/local/lib/python2.7/dist-packages/sympy-0.7.5_git-py2.7.egg/sympy/galgebra/ga.pyc in dot(self, A, B)
989 A = self.remove_scalar_part(A)
990 B = self.remove_scalar_part(B)
--> 991 return update_and_substitute(A, B, dot_product_basis_blades, self.dot_table_dict)
992 else:
993 if self.dot_mode == '<': # Left contraction
/usr/local/lib/python2.7/dist-packages/sympy-0.7.5_git-py2.7.egg/sympy/galgebra/ga.pyc in update_and_substitute(expr1, expr2, func, mul_dict)
89 #Update mul dictionary for future
90 if key not in mul_dict:
---> 91 mul_dict[key] = func(key)
92 expr += coef1 * coef2 * mul_dict[key]
93 return expr
/usr/local/lib/python2.7/dist-packages/sympy-0.7.5_git-py2.7.egg/sympy/galgebra/ga.pyc in dot_product_basis_blades(self, blade12)
752 # dot product for orthogonal basis
753 (blade1, blade2) = blade12
--> 754 index1 = self.blades_to_indexes_dict[blade1]
755 index2 = self.blades_to_indexes_dict[blade2]
756 index = list(index1 + index2)
KeyError: e_r