pptx-validation-fallback

# PowerPoint Validation Fallback ## When to Use Use this skill when `read_file` fails to properly read or validate PowerPoint (.pptx) files. This provides a reliable alternative for verifying presentation contents including slide count, titles, and structure. ## Procedure ### Step 1: Check if read_file Failed If `read_file` with filetype `pptx` returns errors, incomplete content, or cannot extract slide information, proceed to the fallback method. ### Step 2: Use run_shell with python-pptx Execute Python code via `run_shell` using the `python-pptx` library to inspect the presentation: ```python from pptx import Presentation # Load the presentation prs = Presentation('path/to/file.pptx') # Get basic info slide_count = len(prs.slides) print(f"Total slides: {slide_count}") # Extract slide titles for i, slide in enumerate(prs.slides): if slide.shapes.title: title = slide.shapes.title.text print(f"Slide {i+1}: {title}") else: print(f"Slide {i+1}: [No title]") ``` ### Step 3: Validate Structure Check that the presentation meets expected requirements: ```python from pptx import Presentation prs = Presentation('path/to/file.pptx') # Validation checks expected_slides = 10 # Adjust based on requirements actual_slides = len(prs.slides) if actual_slides >= expected_slides: print(f"✓ Slide count OK: {actual_slides} slides") else: print(f"✗ Insufficient slides: {actual_slides}/{expected_slides}") # Check for content on each slide for i, slide in enumerate(prs.slides): has_title = slide.shapes.title is not None has_content = len(slide.shapes) > 1 print(f"Slide {i+1}: title={has_title}, content={has_content}") ``` ### Step 4: Extract Detailed Content (Optional) For deeper validation, extract text content from all shapes: ```python from pptx import Presentation prs = Presentation('path/to/file.pptx') for i, slide in enumerate(prs.slides): print(f"\n=== Slide {i+1} ===") for shape in slide.shapes: if hasattr(shape, "text") and shape.text.strip(): print(shape.text) ``` ## Expected Output Successful validation should provide: - Confirmed slide count - List of slide titles - Verification that each slide has expected content structure ## Common Use Cases - Verifying generated presentations have correct number of slides - Confirming slide titles match required topics - Validating presentation structure before delivery - Debugging why read_file cannot parse a .pptx file ## Dependencies The `python-pptx` library must be available in the execution environment. Most Python environments support it via pip: ```bash pip install python-pptx ```