These two imports do not cause me a problem in the current development version.
/c On Tuesday, March 29, 2022 at 5:48:37 PM UTC-5 cing...@gmail.com wrote: > Hey guys, when i add interesting vector import my code, i display that > error : *TypeError: unsupported operand type(s) for +=: 'NoneType' and > 'NoneType'* > > from sympy.vector import CoordSys3D, curl, divergence, gradient > from sympy.vector import * > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sympy/951b7cf8-062f-43a8-a334-48ca53e5a1c2n%40googlegroups.com.
