More doctest fixes.

This is incomplete but I'm going to try to deal with the following:

1) each line in a black example is after jupyter#308 it's own line, so try to
   collapse subsequent code blocks.

2) It seem that we get a number of report_failure, but failure is just
   when the output does not match, though when we have a block with
   multiple >>> in sequence and we ignore output on purpose they now are
   seen as failure.

It's not super great and will need a buch of workaround

papyri/gen.py

@@ -30,7 +30,17 @@
 from itertools import count
 from pathlib import Path
 from types import FunctionType, ModuleType
-from typing import Any, Dict, FrozenSet, List, MutableMapping, Optional, Sequence, Tuple
+from typing import (
+    Any,
+    Dict,
+    FrozenSet,
+    List,
+    MutableMapping,
+    Optional,
+    Sequence,
+    Tuple,
+    Union,
+)
 import io
 
 import jedi
@@ -1139,12 +1149,57 @@ def report_failure(self, out, test, example, got):
             Code(tok_entries, got, ExecutionStatus.failure)
         )
 
-    def get_example_section_data(self):
+    def get_example_section_data(self) -> Section:
         example_section_data = self._example_section_data
         self._example_section_data = Section([], None)
         return example_section_data
 
 
+    def _compact(self, example_section_data) -> Section:
+        """
+        Compact consecutive execution items that do have the same execution status. 
+
+        TODO:
+
+        This is not perfect as doctest tests that the output is the same, thus when we have a multiline block 
+        If any of the intermediate items produce an output, the result will be failure.
+        """
+        acc: List[Union[MText, Code]] = []
+        current_code: Optional[
+            Code
+        ] = None
+
+
+        for item in example_section_data:
+            if not isinstance(item, Code):
+                if current_code is not None:
+                    acc.append(current_code)
+                    acc.append(MText(str(current_code.out)))
+                    acc.append(MText(str(current_code.ce_status)))
+                    current_code = None
+                acc.append(item)
+            else:
+                if current_code is None:
+                    assert item is not None
+                    current_code = item
+                    continue
+
+                if current_code.ce_status == item.ce_status:
+                    current_code = Code(
+                        current_code.entries + item.entries, item.out, item.ce_status
+                    )
+                else:
+                    acc.append(current_code)
+                    acc.append(MText(str(current_code.out)))
+                    acc.append(MText(str(current_code.ce_status)))
+                    assert item is not None
+                    current_code = item
+
+        if current_code:
+            acc.append(current_code)
+        return Section(acc, None)
+
+
 class Gen:
     """
     Core class to generate a DocBundle for a given library.
@@ -1347,6 +1402,8 @@ def debugprint(*args):
             elif block:
                 example_section_data.append(MText(block))
 
+        example_section_data = doctest_runner._compact(example_section_data)
+
         # TODO fix this if plt.close not called and still a lingering figure.
         fig_managers = _pylab_helpers.Gcf.get_all_fig_managers()
         if len(fig_managers) != 0: