fix: Pipeline - disable autoshow on Jupyter (#7397)

* try

* fix docstring

* simplify tests

* add release note

haystack/core/pipeline/pipeline.py

@@ -86,13 +86,7 @@ class Pipeline:
     def __repr__(self) -> str:
         """
         Returns a text representation of the Pipeline.
-        If this runs in a Jupyter notebook, it will instead display the Pipeline image.
         """
-        if is_in_jupyter():
-            # If we're in a Jupyter notebook we want to display the image instead of the text repr.
-            self.show()
-            return ""
-
         res = f"{object.__repr__(self)}\n"
         if self.metadata:
             res += "🧱 Metadata\n"

releasenotes/notes/pipe-disable-autoshow-dbbafd2bfdcce7a4.yaml

@@ -0,0 +1,7 @@
+---
+enhancements:
+  - |
+    In Jupyter notebooks, the image of the Pipeline will no longer be displayed automatically.
+    The textual representation of the Pipeline will be displayed.
+
+    To display the Pipeline image, use the `show` method of the Pipeline object.

test/core/pipeline/test_pipeline.py

@@ -281,8 +281,7 @@ def test_get_component_name_not_added_to_pipeline():
     assert pipe.get_component_name(some_component) == ""
 
 
-@patch("haystack.core.pipeline.pipeline.is_in_jupyter")
-def test_repr(mock_is_in_jupyter):
+def test_repr():
     pipe = Pipeline(metadata={"test": "test"}, max_loops_allowed=42)
     pipe.add_component("add_two", AddFixedValue(add=2))
     pipe.add_component("add_default", AddFixedValue())
@@ -302,28 +301,10 @@ def test_repr(mock_is_in_jupyter):
         "  - add_two.result -> double.value (int)\n"
         "  - double.value -> add_default.value (int)\n"
     )
-    # Simulate not being in a notebook
-    mock_is_in_jupyter.return_value = False
+
     assert repr(pipe) == expected_repr
 
 
-@patch("haystack.core.pipeline.pipeline.is_in_jupyter")
-def test_repr_in_notebook(mock_is_in_jupyter):
-    pipe = Pipeline(metadata={"test": "test"}, max_loops_allowed=42)
-    pipe.add_component("add_two", AddFixedValue(add=2))
-    pipe.add_component("add_default", AddFixedValue())
-    pipe.add_component("double", Double())
-    pipe.connect("add_two", "double")
-    pipe.connect("double", "add_default")
-
-    # Simulate being in a notebook
-    mock_is_in_jupyter.return_value = True
-
-    with patch.object(Pipeline, "show") as mock_show:
-        assert repr(pipe) == ""
-        mock_show.assert_called_once_with()
-
-
 def test_run_raises_if_max_visits_reached():
     def custom_init(self):
         component.set_input_type(self, "x", int)