DO NOT MERGE: print-outs to diagnose issue #3213

src/awkward/contents/content.py

@@ -512,6 +512,8 @@ def __getitem__(self, where):
         return self._getitem(where)
 
     def _getitem(self, where):
+        print("\nContent::_getitem", self, where)  # noqa: T201
+
         if is_integer_like(where):
             return self._getitem_at(ak._slicing.normalize_integer_like(where))
 

src/awkward/contents/listarray.py

@@ -307,6 +307,8 @@ def _is_getitem_at_placeholder(self) -> bool:
         )
 
     def _getitem_at(self, where: IndexType):
+        print("\nListArray::_getitem_at", self, where)  # noqa: T201
+
         if not self._backend.nplike.known_data:
             self._touch_data(recursive=False)
             return self._content._getitem_range(0, 0)
@@ -319,6 +321,8 @@ def _getitem_at(self, where: IndexType):
         return self._content._getitem_range(start, stop)
 
     def _getitem_range(self, start: IndexType, stop: IndexType) -> Content:
+        print("\nListArray::_getitem_range", self, start, stop)  # noqa: T201
+
         if not self._backend.nplike.known_data:
             self._touch_shape(recursive=False)
             return self
@@ -351,6 +355,8 @@ def _getitem_fields(
         )
 
     def _carry(self, carry: Index, allow_lazy: bool) -> Content:
+        print("\nListArray::_carry", self, carry, allow_lazy)  # noqa: T201
+
         assert isinstance(carry, ak.index.Index)
 
         try:
@@ -446,6 +452,14 @@ def _broadcast_tooffsets64(self, offsets: Index) -> ListOffsetArray:
     def _getitem_next_jagged(
         self, slicestarts: Index, slicestops: Index, slicecontent: Content, tail
     ) -> Content:
+        print(  # noqa: T201
+            "\nListArray::_getitem_next_jagged",
+            self,
+            slicestarts,
+            slicestops,
+            slicecontent,
+        )
+
         slicestarts = slicestarts.to_nplike(self._backend.index_nplike)
         slicestops = slicestops.to_nplike(self._backend.index_nplike)
         if self._backend.nplike.known_data and slicestarts.length != self.length:
@@ -704,6 +718,8 @@ def _getitem_next(
         tail: tuple[SliceItem, ...],
         advanced: Index | None,
     ) -> Content:
+        print("\nListArray::_getitem_next", self, head, tail, advanced)  # noqa: T201
+
         if head is NO_HEAD:
             return self
 
@@ -712,6 +728,9 @@ def _getitem_next(
             nexthead, nexttail = ak._slicing.head_tail(tail)
             lenstarts = self._starts.length
             nextcarry = ak.index.Index64.empty(lenstarts, self._backend.index_nplike)
+            print(f"    {lenstarts = }")  # noqa: T201
+            print(f"    {self._starts = }")  # noqa: T201
+            print(f"    {self._stops = }")  # noqa: T201
             assert (
                 nextcarry.nplike is self._backend.index_nplike
                 and self._starts.nplike is self._backend.index_nplike
@@ -732,6 +751,7 @@ def _getitem_next(
                 ),
                 slicer=head,
             )
+            print(f"    {nextcarry = }")  # noqa: T201
             nextcontent = self._content._carry(nextcarry, True)
             return nextcontent._getitem_next(nexthead, nexttail, advanced)
 

src/awkward/contents/listoffsetarray.py

@@ -304,6 +304,8 @@ def _is_getitem_at_placeholder(self) -> bool:
         return isinstance(self._offsets, PlaceholderArray)
 
     def _getitem_at(self, where: IndexType):
+        print("\nListOffsetArray::_getitem_at", self, where)  # noqa: T201
+
         # Wrap `where` by length
         if not is_unknown_scalar(where) and where < 0:
             length_index = self._backend.index_nplike.shape_item_as_index(self.length)
@@ -319,6 +321,8 @@ def _getitem_at(self, where: IndexType):
         return self._content._getitem_range(start, stop)
 
     def _getitem_range(self, start: IndexType, stop: IndexType) -> Content:
+        print("\nListOffsetArray::_getitem_range", self, start, stop)  # noqa: T201
+
         if not self._backend.nplike.known_data:
             self._touch_shape(recursive=False)
             return self
@@ -350,6 +354,8 @@ def _getitem_fields(
         )
 
     def _carry(self, carry: Index, allow_lazy: bool) -> Content:
+        print("\nListOffsetArray::_carry", self, carry, allow_lazy)  # noqa: T201
+
         assert isinstance(carry, ak.index.Index)
 
         try:
@@ -417,6 +423,14 @@ def _broadcast_tooffsets64(self, offsets: Index) -> ListOffsetArray:
     def _getitem_next_jagged(
         self, slicestarts: Index, slicestops: Index, slicecontent: Content, tail
     ) -> Content:
+        print(  # noqa: T201
+            "\nListOffsetArray::_getitem_next_jagged",
+            self,
+            slicestarts,
+            slicestops,
+            slicecontent,
+        )
+
         out = ak.contents.ListArray(
             self.starts, self.stops, self._content, parameters=self._parameters
         )
@@ -428,6 +442,8 @@ def _getitem_next(
         tail: tuple[SliceItem, ...],
         advanced: Index | None,
     ) -> Content:
+        print("\nListOffsetArray::_getitem_next", self, head, tail, advanced)  # noqa: T201
+
         if head is NO_HEAD:
             return self
 

src/awkward/contents/numpyarray.py

@@ -310,6 +310,8 @@ def _is_getitem_at_placeholder(self) -> bool:
         return isinstance(self._data, PlaceholderArray)
 
     def _getitem_at(self, where: IndexType):
+        print("\nNumpyArray::_getitem_at", self, where)  # noqa: T201
+
         if not self._backend.nplike.known_data and len(self._data.shape) == 1:
             self._touch_data(recursive=False)
             return TypeTracerArray._new(self._data.dtype, shape=())
@@ -325,6 +327,8 @@ def _getitem_at(self, where: IndexType):
             return out
 
     def _getitem_range(self, start: IndexType, stop: IndexType) -> Content:
+        print("\nNumpyArray::_getitem_range", self, start, stop)  # noqa: T201
+
         try:
             out = self._data[start:stop]
         except IndexError as err:
@@ -345,6 +349,8 @@ def _getitem_fields(
         raise ak._errors.index_error(self, where, "not an array of records")
 
     def _carry(self, carry: Index, allow_lazy: bool) -> Content:
+        print("\nNumpyArray::_carry", self, carry, allow_lazy)  # noqa: T201
+
         assert isinstance(carry, ak.index.Index)
         try:
             nextdata = self._data[carry.data]
@@ -355,6 +361,14 @@ def _carry(self, carry: Index, allow_lazy: bool) -> Content:
     def _getitem_next_jagged(
         self, slicestarts: Index, slicestops: Index, slicecontent: Content, tail
     ) -> Content:
+        print(  # noqa: T201
+            "\nNumpyArray::_getitem_next_jagged",
+            self,
+            slicestarts,
+            slicestops,
+            slicecontent,
+        )
+
         if self._data.ndim == 1:
             raise ak._errors.index_error(
                 self,
@@ -375,6 +389,8 @@ def _getitem_next(
         tail: tuple[SliceItem, ...],
         advanced: Index | None,
     ) -> Content:
+        print("\nNumpyArray::_getitem_next", self, head, tail, advanced)  # noqa: T201
+
         if head is NO_HEAD:
             return self