From a3c37382a7d6141910d4ce7f34e4d302ac2cebf0 Mon Sep 17 00:00:00 2001
From: Nicolas Pogeant <64933282+npogeant@users.noreply.github.com>
Date: Fri, 24 Jul 2026 13:18:19 +0000
Subject: [PATCH 1/5] Replace diagnostic print() calls with logging

---
 src/deckflow/adders/image_adder.py         |  7 ++++--
 src/deckflow/content/chart_extractor.py    |  7 ++++--
 src/deckflow/content/registry.py           |  9 ++++---
 src/deckflow/content/table_extractor.py    |  7 ++++--
 src/deckflow/content/text_extractor.py     |  7 ++++--
 src/deckflow/elements/table.py             | 13 ++++++----
 src/deckflow/elements/text.py              | 13 ++++++----
 src/deckflow/formatters/font_properties.py |  7 ++++--
 src/deckflow/updaters/chart_updater.py     |  7 ++++--
 src/deckflow/updaters/table_updater.py     | 29 ++++++++++++----------
 10 files changed, 68 insertions(+), 38 deletions(-)

diff --git a/src/deckflow/adders/image_adder.py b/src/deckflow/adders/image_adder.py
index 64dd6bc..d2d71c7 100644
--- a/src/deckflow/adders/image_adder.py
+++ b/src/deckflow/adders/image_adder.py
@@ -1,6 +1,9 @@
+import logging
 from typing import Any
 from PIL import Image
 
+logger = logging.getLogger(__name__)
+
 class ImageAdder:
     """Adder for adding images to slides."""
 
@@ -49,6 +52,6 @@ def add_image_from_text(slide: Any, text_element: Any, image_path: str, keep_hei
             slide.shapes.add_picture(image_path, left=left, top=top, width=width, height=height)
             return True
             
-        except Exception as e:
-            print(f"Error adding image: {e}")
+        except Exception:
+            logger.exception("Error adding image")
             return False
diff --git a/src/deckflow/content/chart_extractor.py b/src/deckflow/content/chart_extractor.py
index 50cb911..8b28906 100644
--- a/src/deckflow/content/chart_extractor.py
+++ b/src/deckflow/content/chart_extractor.py
@@ -1,5 +1,8 @@
+import logging
 from typing import Any, Dict, List
 
+logger = logging.getLogger(__name__)
+
 def extract_chart_data(chart: Any) -> Dict[str, Any]:
     """ Extract chart data safely from a pptx chart object."""
     data: Dict[str, Any] = {'categories': [], 'series': {}}
@@ -19,6 +22,6 @@ def extract_chart_data(chart: Any) -> Dict[str, Any]:
                 if not isinstance(data.get('series'), dict):
                     data['series'] = {}
                 data['series'][name] = values
-    except Exception as e:
-        print(f"Error extracting chart data: {e}")
+    except Exception:
+        logger.exception("Error extracting chart data")
     return data
\ No newline at end of file
diff --git a/src/deckflow/content/registry.py b/src/deckflow/content/registry.py
index 6cadf1b..cc84036 100644
--- a/src/deckflow/content/registry.py
+++ b/src/deckflow/content/registry.py
@@ -1,5 +1,8 @@
+import logging
 from typing import Any, List, Dict, Optional
 
+logger = logging.getLogger(__name__)
+
 
 class ContentRegistry:
     """Registry for managing slide content items."""
@@ -14,12 +17,12 @@ def get_item_by_name(self, items: List[Dict[str, Any]], name: str, item_type: st
         from .duplicate import DuplicateManager
         
         if DuplicateManager.has_duplicates(items, name):
-            print(f"{name} has duplicates!")
+            logger.warning("%s has duplicates!", name)
             return None
-        
+
         item = next((item for item in items if item['name'] == name), None)
         if item is None:
-            print(f"No {item_type} found with this name")
+            logger.warning("No %s found with this name: %s", item_type, name)
             return None
         
         return item
diff --git a/src/deckflow/content/table_extractor.py b/src/deckflow/content/table_extractor.py
index e514bc2..6379f65 100644
--- a/src/deckflow/content/table_extractor.py
+++ b/src/deckflow/content/table_extractor.py
@@ -1,5 +1,8 @@
+import logging
 from typing import Any, List
 
+logger = logging.getLogger(__name__)
+
 def extract_table_data(table: Any) -> List[List[str]]:
     """ 
     Extract table data safely from a pptx table object.
@@ -14,7 +17,7 @@ def extract_table_data(table: Any) -> List[List[str]]:
             for cell in row.cells:
                 row_data.append(cell.text)
             data.append(row_data)
-    except Exception as e:
-        print(f"Error extracting table data: {e}")
+    except Exception:
+        logger.exception("Error extracting table data")
     
     return data
\ No newline at end of file
diff --git a/src/deckflow/content/text_extractor.py b/src/deckflow/content/text_extractor.py
index a89b4ba..fda0ff7 100644
--- a/src/deckflow/content/text_extractor.py
+++ b/src/deckflow/content/text_extractor.py
@@ -1,5 +1,8 @@
+import logging
 from typing import Any
 
+logger = logging.getLogger(__name__)
+
 def extract_text(shape: Any) -> str:
     """ Extract text data safely from a pptx shape."""
     try:
@@ -9,6 +12,6 @@ def extract_text(shape: Any) -> str:
             parts = [p.text for p in shape.text_frame.paragraphs]
             return "\n".join(parts)
         return ""
-    except Exception as e:
-        print(f"Error extracting text: {e}")
+    except Exception:
+        logger.exception("Error extracting text")
         return ""
\ No newline at end of file
diff --git a/src/deckflow/elements/table.py b/src/deckflow/elements/table.py
index b4fe68f..56d7402 100644
--- a/src/deckflow/elements/table.py
+++ b/src/deckflow/elements/table.py
@@ -1,3 +1,4 @@
+import logging
 from typing import Any, List, Optional, Union
 
 from ..content.table_extractor import extract_table_data
@@ -6,6 +7,8 @@
 from ..updaters.table_updater import TableUpdater
 from ..formatters.table_printer import TablePrinter
 
+logger = logging.getLogger(__name__)
+
 class DeckTable:
     """Class to manage an individual PowerPoint table."""
     
@@ -33,21 +36,21 @@ def get_cell(self, row: int, col: int) -> Optional[str]:
         if 0 <= row < self.rows and 0 <= col < self.cols:
             return self.data[row][col]
         else:
-            print(f"Invalid cell indices ({row}, {col}). Table size: {self.rows}x{self.cols}")
+            logger.warning("Invalid cell indices (%d, %d). Table size: %dx%d", row, col, self.rows, self.cols)
             return None
-    
+
     def get_row(self, row_index: int) -> Optional[List[str]]:
         if 0 <= row_index < self.rows:
             return self.data[row_index][:]
         else:
-            print(f"Invalid row index {row_index}. Table has {self.rows} rows")
+            logger.warning("Invalid row index %d. Table has %d rows", row_index, self.rows)
             return None
-    
+
     def get_column(self, col_index: int) -> Optional[List[str]]:
         if 0 <= col_index < self.cols:
             return [row[col_index] for row in self.data]
         else:
-            print(f"Invalid column index {col_index}. Table has {self.cols} columns")
+            logger.warning("Invalid column index %d. Table has %d columns", col_index, self.cols)
             return None
         
     def update_cell(self, row: int, col: int, value: str, color_by_value: bool = False):
diff --git a/src/deckflow/elements/text.py b/src/deckflow/elements/text.py
index 8bacc56..43f59aa 100644
--- a/src/deckflow/elements/text.py
+++ b/src/deckflow/elements/text.py
@@ -1,3 +1,4 @@
+import logging
 from typing import Any
 
 from ..content.text_extractor import extract_text
@@ -5,6 +6,8 @@
 from ..formatters.font_properties import copy_font_properties
 from ..updaters.text_updater import TextUpdater
 
+logger = logging.getLogger(__name__)
+
 class DeckText:
     """Class to manage an individual PowerPoint text element."""
 
@@ -34,7 +37,7 @@ def update(self, new_text: str, color_by_value: bool = False):
         self.color_by_value = color_by_value
 
         if self.current_content == self.original_content:
-            print(f"No changes to save for shape {self.name}")
+            logger.debug("No changes to save for shape %s", self.name)
             return True
 
         try:
@@ -43,10 +46,10 @@ def update(self, new_text: str, color_by_value: bool = False):
             elif hasattr(self.shape, "text"):
                 self.shape.text = self.current_content
             else:
-                print(f"Text {self.name} has no text support")
+                logger.warning("Text %s has no text support", self.name)
                 return False
-            print(f"Text updated for {self.name}")
+            logger.debug("Text updated for %s", self.name)
             return True
-        except Exception as e:
-            print(f"Error updating text {self.name}: {e}")
+        except Exception:
+            logger.exception("Error updating text %s", self.name)
             return False
\ No newline at end of file
diff --git a/src/deckflow/formatters/font_properties.py b/src/deckflow/formatters/font_properties.py
index f10cc32..4d449f1 100644
--- a/src/deckflow/formatters/font_properties.py
+++ b/src/deckflow/formatters/font_properties.py
@@ -1,5 +1,8 @@
+import logging
 from typing import Any
 
+logger = logging.getLogger(__name__)
+
 def copy_font_properties(source_font: Any, target_font: Any):
     """Copy font properties while tolerating missing attributes."""
 
@@ -22,5 +25,5 @@ def copy_font_properties(source_font: Any, target_font: Any):
                     target_font.color.brightness = source_font.color.brightness
         except Exception:
             pass
-    except Exception as e:
-        print(f"Warning: Could not copy some font properties: {e}")
\ No newline at end of file
+    except Exception:
+        logger.warning("Could not copy some font properties", exc_info=True)
\ No newline at end of file
diff --git a/src/deckflow/updaters/chart_updater.py b/src/deckflow/updaters/chart_updater.py
index c0fe649..9bbd62f 100644
--- a/src/deckflow/updaters/chart_updater.py
+++ b/src/deckflow/updaters/chart_updater.py
@@ -1,5 +1,8 @@
+import logging
 from typing import Any
 
+logger = logging.getLogger(__name__)
+
 class ChartUpdater:
     """Updater for chart elements, preserving formatting/colors."""
 
@@ -19,6 +22,6 @@ def apply(self, data: dict) -> bool:
                 chart_data.add_series(name, clean_values)
             self.chart.replace_data(chart_data)
             return True
-        except Exception as e:
-            print(f"Error applying chart data: {e}")
+        except Exception:
+            logger.exception("Error applying chart data")
             return False
\ No newline at end of file
diff --git a/src/deckflow/updaters/table_updater.py b/src/deckflow/updaters/table_updater.py
index b8ea344..c595034 100644
--- a/src/deckflow/updaters/table_updater.py
+++ b/src/deckflow/updaters/table_updater.py
@@ -1,7 +1,10 @@
+import logging
 from typing import Any, List
 from pptx.util import Pt
 from pptx.dml.color import RGBColor
 
+logger = logging.getLogger(__name__)
+
 class TableUpdater:
     """Updater for table elements."""
 
@@ -18,34 +21,34 @@ def __init__(self, table: Any, color_analyzer: Any, formatter: Any):
     def update_cell(self, row: int, col: int, value: Any) -> bool:
         if 0 <= row < self.rows and 0 <= col < self.cols:
             self.table.data[row][col] = "" if value is None else str(value)
-            print(f"Cell ({row},{col}) -> '{self.table.data[row][col]}'")
+            logger.debug("Cell (%d,%d) -> '%s'", row, col, self.table.data[row][col])
             return True
-        print(f"Invalid cell indices ({row},{col}) for table {self.rows}x{self.cols}")
+        logger.warning("Invalid cell indices (%d,%d) for table %dx%d", row, col, self.rows, self.cols)
         return False
 
     def update_row(self, row_index: int, values: List[Any]) -> bool:
         if not (0 <= row_index < self.rows):
-            print(f"Invalid row index {row_index}")
+            logger.warning("Invalid row index %d", row_index)
             return False
         for c in range(min(self.cols, len(values))):
             self.table.data[row_index][c] = "" if values[c] is None else str(values[c])
-        print(f"Row {row_index} updated")
+        logger.debug("Row %d updated", row_index)
         return True
 
     def update_column(self, col_index: int, values: List[Any]) -> bool:
         if not (0 <= col_index < self.cols):
-            print(f"Invalid column index {col_index}")
+            logger.warning("Invalid column index %d", col_index)
             return False
         for r in range(min(self.rows, len(values))):
             self.table.data[r][col_index] = "" if values[r] is None else str(values[r])
-        print(f"Column {col_index} updated")
+        logger.debug("Column %d updated", col_index)
         return True
-    
+
     def save_changes(self, color_by_value: bool = False):
         try:
             # Check if there are changes to save
             if self.table.data == self.table.original_data:
-                print(f"No changes to save for table {self.table.name}")
+                logger.debug("No changes to save for table %s", self.table.name)
                 return True
 
             # Apply changes to the actual PowerPoint table object
@@ -79,14 +82,14 @@ def save_changes(self, color_by_value: bool = False):
 
                             else:
                                 cell.text = new_text
-                        except Exception as e:
-                            print(f"Warning: Could not update cell ({row_idx},{col_idx}): {e}")
+                        except Exception:
+                            logger.warning("Could not update cell (%d,%d)", row_idx, col_idx, exc_info=True)
 
             # Update the original state
             self.table.original_data = [row[:] for row in self.table.data]
-            print(f"Table {self.table.name} changes applied")
+            logger.debug("Table %s changes applied", self.table.name)
             return True
 
-        except Exception as e:
-            print(f"Error saving table changes: {e}")
+        except Exception:
+            logger.exception("Error saving table changes")
             return False
\ No newline at end of file

From 50e1762b3d53fb2e824174034f7738bc0218749e Mon Sep 17 00:00:00 2001
From: Nicolas Pogeant <64933282+npogeant@users.noreply.github.com>
Date: Fri, 24 Jul 2026 13:20:02 +0000
Subject: [PATCH 2/5] Declare Pillow as an explicit dependency

---
 pyproject.toml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pyproject.toml b/pyproject.toml
index 8b14bc1..ae7925b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,6 +11,7 @@ readme = "README.md"
 requires-python = ">=3.9" # Support 3.9+
 dependencies = [
     "python-pptx>=1.0.2",
+    "Pillow>=9.0.0",
 ]
 license = "MIT"
 license-files = ["LICEN[CS]E*"]
@@ -22,3 +23,6 @@ test = [
 
 [project.urls]
 Homepage = "https://github.com/npogeant/deckflow"
+
+[tool.setuptools.package-data]
+deckflow = ["py.typed"]

From 718e47cbfaa3a1a40e8b07511afcc918d4039aac Mon Sep 17 00:00:00 2001
From: Nicolas Pogeant <64933282+npogeant@users.noreply.github.com>
Date: Fri, 24 Jul 2026 13:20:11 +0000
Subject: [PATCH 3/5] Add py.typed marker for downstream type checking

---
 src/deckflow/py.typed | 0
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 src/deckflow/py.typed

diff --git a/src/deckflow/py.typed b/src/deckflow/py.typed
new file mode 100644
index 0000000..e69de29

From 257613f365da2490e8a2a969da4ee5a2daf1d533 Mon Sep 17 00:00:00 2001
From: Nicolas Pogeant <64933282+npogeant@users.noreply.github.com>
Date: Fri, 24 Jul 2026 13:23:13 +0000
Subject: [PATCH 4/5] Batch chart updates into a single replace_data call

---
 src/deckflow/elements/chart.py | 14 ++++++++++++--
 src/deckflow/slide.py          |  7 +------
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/src/deckflow/elements/chart.py b/src/deckflow/elements/chart.py
index 02379cf..933ce0b 100644
--- a/src/deckflow/elements/chart.py
+++ b/src/deckflow/elements/chart.py
@@ -1,4 +1,4 @@
-from typing import Any, List
+from typing import Any, Dict, List
 
 from copy import deepcopy
 from ..content.chart_extractor import extract_chart_data
@@ -33,6 +33,16 @@ def update_series(self, series_name: str, new_values: List[float]):
     def update_categories(self, new_categories: List[str]):
         self.data['categories'] = list(new_categories)
         return self._updater.apply(self.data)
-    
+
+    def update(self, new_data: Dict[str, Any]):
+        """Merge categories/series from new_data and apply in a single write."""
+        if "categories" in new_data:
+            self.data['categories'] = list(new_data["categories"])
+        if "series" in new_data:
+            series = self.data.setdefault('series', {})
+            for series_name, values in new_data["series"].items():
+                series[series_name] = [v if v is not None else 0 for v in values]
+        return self._updater.apply(self.data)
+
     def save_changes(self):
         return self._updater.apply(self.data)
\ No newline at end of file
diff --git a/src/deckflow/slide.py b/src/deckflow/slide.py
index 144653f..f8f4f49 100644
--- a/src/deckflow/slide.py
+++ b/src/deckflow/slide.py
@@ -69,12 +69,7 @@ def update_chart(self, name: str, new_data: Dict[str, Any]) -> None:
         if not chart:
             raise ValueError(f"Chart '{name}' not found")
 
-        if "categories" in new_data:
-            chart.update_categories(new_data["categories"])
-        if "series" in new_data:
-            for series_name, values in new_data["series"].items():
-                chart.update_series(series_name, values)
-        chart.save_changes()
+        chart.update(new_data)
 
     def update_table(self, name: str, new_data: List, by_rows: bool = True, by_columns: bool = False, color_by_value: bool = False) -> None:
         """Update a table with new data either by rows or by columns."""

From 2ae1c9ee4585f36d17954960a351301d89fc4d07 Mon Sep 17 00:00:00 2001
From: Nicolas Pogeant <64933282+npogeant@users.noreply.github.com>
Date: Fri, 24 Jul 2026 13:23:25 +0000
Subject: [PATCH 5/5] De-duplicate remove_text/remove_chart/remove_table

---
 src/deckflow/slide.py | 34 +++++++++++++---------------------
 1 file changed, 13 insertions(+), 21 deletions(-)

diff --git a/src/deckflow/slide.py b/src/deckflow/slide.py
index f8f4f49..2711db9 100644
--- a/src/deckflow/slide.py
+++ b/src/deckflow/slide.py
@@ -102,32 +102,24 @@ def add_image_from_text(self, text_name: str, image_path: str, keep_height: bool
         if not success:
             raise RuntimeError(f"Failed to add image at text element '{text_name}'")
 
-    def remove_text(self, name: str) -> bool:
-        """Remove a text element by its name."""
-        text_obj = self.get_text(name)
-        if not text_obj:
-            raise ValueError(f"Text element '{name}' not found")
-        removed = ElementRemover.remove_shape(text_obj.shape)
+    def _remove_element(self, name: str, getter, label: str) -> bool:
+        """Look up an element by name via getter and remove its shape from the slide."""
+        element = getter(name)
+        if not element:
+            raise ValueError(f"{label} '{name}' not found")
+        removed = ElementRemover.remove_shape(element.shape)
         if not removed:
-            raise RuntimeError(f"Failed to remove text element '{name}'")
+            raise RuntimeError(f"Failed to remove {label.lower()} '{name}'")
         return True
 
+    def remove_text(self, name: str) -> bool:
+        """Remove a text element by its name."""
+        return self._remove_element(name, self.get_text, "Text element")
+
     def remove_chart(self, name: str) -> bool:
         """Remove a chart element by its name."""
-        chart_obj = self.get_chart(name)
-        if not chart_obj:
-            raise ValueError(f"Chart '{name}' not found")
-        removed = ElementRemover.remove_shape(chart_obj.shape)
-        if not removed:
-            raise RuntimeError(f"Failed to remove chart '{name}'")
-        return True
+        return self._remove_element(name, self.get_chart, "Chart")
 
     def remove_table(self, name: str) -> bool:
         """Remove a table element by its name."""
-        table_obj = self.get_table(name)
-        if not table_obj:
-            raise ValueError(f"Table '{name}' not found")
-        removed = ElementRemover.remove_shape(table_obj.shape)
-        if not removed:
-            raise RuntimeError(f"Failed to remove table '{name}'")
-        return True
\ No newline at end of file
+        return self._remove_element(name, self.get_table, "Table")
\ No newline at end of file