pystencils.flow.flowgraph.FlowgraphAssignment# class pystencils.flow.flowgraph.FlowgraphAssignment(lhs, rhs)# Base class for assignments. Parameters: lhs (LHS_T) rhs (sp.Basic) subs(substitutions, **kwargs)# Perform substitutions inside this assignment. See the subs method of sp.Basic for details. Parameters: substitutions (Mapping[Basic, Basic])