725b6fc0fc599663927c13dd661a79d63c66bda5,brian2/parsing/expressions.py,,parse_expression_dimensions,#Any#Any#,185

Before Change

        elif op=="Div":
            u = left/right
        elif op=="Pow":
            if have_same_dimensions(left, 1) and have_same_dimensions(right, 1):
                return DIMENSIONLESS
            n = _get_value_from_expression(expr.right, variables)
            u = left**n

After Change

        right_dim = parse_expression_dimensions(expr.right, variables)
        if op in ["Add", "Sub", "Mod"]:
            // dimensions should be the same
            if left_dim is not right_dim:
                op_symbol = {"Add": "+", "Sub": "-", "Mod": "%"}.get(op)
                left_str = NodeRenderer().render_node(expr.left)
                right_str = NodeRenderer().render_node(expr.right)
                left_unit = repr(get_unit(left_dim))
                right_unit = repr(get_unit(right_dim))
                error_msg = ("Expression "{left} {op} {right}" uses "
                             "inconsistent units ("{left}" has unit "
                             "{left_unit}; "{right}" "
                             "has unit {right_unit})").format(left=left_str,
                                                             right=right_str,
                                                             op=op_symbol,
                                                             left_unit=left_unit,
                                                             right_unit=right_unit)
                raise DimensionMismatchError(error_msg)
            u = left_dim
        elif op == "Mult":
            u = left_dim*right_dim
        elif op == "Div":

Instances