Refactor a short code section of method _connect_subgroup of class Model of module modeltools slightly to avoid coveragepy wrongly reporting an uncovered continue line.

Due to CPython's peephole optimizer, see nedbat/coveragepy#198).

Author: tyralla

hydpy/core/modeltools.py

@@ -1149,9 +1149,9 @@ def element(self) -> None:
             model.__hydpy_element__ = None
 
     def connect(self) -> None:
-        """Connect all |LinkSequence| objects and the selected |InputSequence|,
-        |ReceiverSequence|, and |OutputSequence| objects of the actual model to the
-        corresponding |NodeSequence| objects.
+        """Connect all |LinkSequence| objects and the selected |InputSequence| and
+        |OutputSequence| objects of the actual model to the corresponding
+        |NodeSequence| objects.
 
         You cannot connect any sequences until the |Model| object itself is connected
         to an |Element| object referencing the required |Node| objects:
@@ -1541,13 +1541,13 @@ def _connect_subgroup(
                             selected_nodes.append(node)
                 if sequence.NDIM == 0:
                     if not selected_nodes:
-                        if (group == "inputs") or not report_noconnect:
-                            continue
-                        raise RuntimeError(
-                            f"Sequence {objecttools.elementphrase(sequence)} cannot "
-                            f"be connected due to no available node handling variable "
-                            f"`{sequence.name.upper()}`."
-                        )
+                        if report_noconnect and (group != "inputs"):
+                            raise RuntimeError(
+                                f"Sequence {objecttools.elementphrase(sequence)} "
+                                f"cannot be connected due to no available node "
+                                f"handling variable `{sequence.name.upper()}`."
+                            )
+                        continue
                     if len(selected_nodes) > 1:
                         raise RuntimeError(
                             f"Sequence `{sequence.name}` cannot be connected as it is "