[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M6HWQS46SCYYVRH9JQEYVFX3":3,"skill-same:01M6HWQS46SCYYVRH9JQEYVFX3":66},{"skillNo":4,"name":5,"nameZh":6,"description":7,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":16,"categories":17,"keywords":23,"publishedAt":33,"linkOnly":34,"markdownContent":35,"markdownBody":36,"frontMatter":37,"refName":38,"commitSha":39,"skillDirectory":40,"forksCount":41,"repositoryHtmlUrl":42,"repositoryHomepageUrl":6,"ownerHtmlUrl":43,"ownerBlogUrl":44,"ownerDescription":6,"updatedAt":45,"install":46,"resources":59},"01M6HWQS46SCYYVRH9JQEYVFX3","pdf-verification-check-112b09",null,"Verify generated PDF files using PyPDF2 to check page counts and integrity","HKUDS\u002FAgentPilot","HKUDS","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F118165258?v=4","01M6HW8VRNZP64G0P4MVJW2KKQ","✨Data Intelligence Lab@HKU✨","01M6HW8VWZVHBRHYH3T330PFWV",7996,"MIT","https:\u002F\u002Fgithub.com\u002FHKUDS\u002FAgentPilot\u002Fblob\u002Fmain\u002Fopenspace\u002Fbenchmarks\u002Fgdpval\u002Fskills\u002Fpdf-verification-check-112b09\u002FSKILL.md",[18],{"categoryNo":19,"categoryName":20,"taxonomyType":21,"taxonomyTypeDesc":22},"01JBSEEDCAT000000000000002","文档处理","SCENARIO","使用场景",[24,25,26,27,28,29,30,31,32],"PDF","verification","check","pdf verification check 112b09","integrity","verify","page","generated","files","2026-11-10 10:12:30",false,"---\nname: pdf-verification-check-112b09\ndescription: Verify generated PDF files using PyPDF2 to check page counts and integrity\n---\n\n# PDF Verification Check\n\nAfter generating PDF files, always programmatically verify their structure and integrity before declaring task completion. This catches formatting errors, incorrect page counts, and corrupted files early.\n\n## When to Use\n\nUse this skill whenever your task involves:\n- Generating PDF documents\n- Creating PDFs with specific page count requirements\n- Producing multi-part PDF outputs (e.g., listings + maps)\n\n## Verification Steps\n\n### 1. Install PyPDF2 (if not available)\n\n```bash\npip install PyPDF2\n```\n\n### 2. Verify PDF Page Count and Integrity\n\nCreate a verification script or run inline Python:\n\n```python\nfrom PyPDF2 import PdfReader\nimport os\n\ndef verify_pdf(pdf_path, expected_pages=None):\n    \"\"\"Verify PDF file exists, is readable, and has expected page count.\"\"\"\n    try:\n        # Check file exists\n        if not os.path.exists(pdf_path):\n            return False, f\"File not found: {pdf_path}\"\n        \n        # Check file size (non-empty)\n        file_size = os.path.getsize(pdf_path)\n        if file_size == 0:\n            return False, f\"Empty file: {pdf_path}\"\n        \n        # Open and verify PDF structure\n        reader = PdfReader(pdf_path)\n        actual_pages = len(reader.pages)\n        \n        # Check page count if expected\n        if expected_pages is not None and actual_pages != expected_pages:\n            return False, f\"Expected {expected_pages} pages, got {actual_pages}\"\n        \n        return True, f\"Valid PDF with {actual_pages} page(s)\"\n        \n    except Exception as e:\n        return False, f\"PDF verification failed: {str(e)}\"\n\n# Example usage\npdf_files = [\n    (\"listings.pdf\", 2),\n    (\"map.pdf\", 1),\n]\n\nall_valid = True\nfor pdf_path, expected in pdf_files:\n    valid, message = verify_pdf(pdf_path, expected)\n    print(f\"{pdf_path}: {'✓' if valid else '✗'} {message}\")\n    if not valid:\n        all_valid = False\n\nif not all_valid:\n    raise Exception(\"PDF verification failed - review and regenerate\")\n```\n\n### 3. Use run_shell for Verification\n\nExecute the verification using `run_shell`:\n\n```bash\npython -c \"\nfrom PyPDF2 import PdfReader\nimport sys\n\npdf_path = 'output.pdf'\nexpected = 2\n\ntry:\n    reader = PdfReader(pdf_path)\n    actual = len(reader.pages)\n    if actual != expected:\n        print(f'ERROR: Expected {expected} pages, got {actual}')\n        sys.exit(1)\n    print(f'OK: {pdf_path} has {actual} page(s)')\nexcept Exception as e:\n    print(f'ERROR: {e}')\n    sys.exit(1)\n\"\n```\n\n### 4. Verify Before Completion\n\n**Critical:** Only mark your task as complete after ALL PDF verification checks pass. If verification fails:\n\n1. Examine the error message\n2. Regenerate the PDF with corrected formatting\n3. Re-run verification\n4. Repeat until all checks pass\n\n## Common Issues Caught\n\n- Wrong page counts (e.g., content spilling to extra pages)\n- Empty or corrupted PDF files\n- PDFs that fail to open properly\n- Missing expected sections due to formatting errors\n\n## Example Workflow\n\n```python\n# 1. Generate PDF\ngenerate_pdf(\"listings.pdf\", content)\n\n# 2. Verify before completion\nvalid, msg = verify_pdf(\"listings.pdf\", expected_pages=2)\nif not valid:\n    # Fix and regenerate\n    regenerate_pdf(\"listings.pdf\", corrected_content)\n    valid, msg = verify_pdf(\"listings.pdf\", expected_pages=2)\n\n# 3. Only complete if verification passes\nassert valid, f\"Cannot complete: {msg}\"\n```","# PDF Verification Check\n\nAfter generating PDF files, always programmatically verify their structure and integrity before declaring task completion. This catches formatting errors, incorrect page counts, and corrupted files early.\n\n## When to Use\n\nUse this skill whenever your task involves:\n- Generating PDF documents\n- Creating PDFs with specific page count requirements\n- Producing multi-part PDF outputs (e.g., listings + maps)\n\n## Verification Steps\n\n### 1. Install PyPDF2 (if not available)\n\n```bash\npip install PyPDF2\n```\n\n### 2. Verify PDF Page Count and Integrity\n\nCreate a verification script or run inline Python:\n\n```python\nfrom PyPDF2 import PdfReader\nimport os\n\ndef verify_pdf(pdf_path, expected_pages=None):\n    \"\"\"Verify PDF file exists, is readable, and has expected page count.\"\"\"\n    try:\n        # Check file exists\n        if not os.path.exists(pdf_path):\n            return False, f\"File not found: {pdf_path}\"\n        \n        # Check file size (non-empty)\n        file_size = os.path.getsize(pdf_path)\n        if file_size == 0:\n            return False, f\"Empty file: {pdf_path}\"\n        \n        # Open and verify PDF structure\n        reader = PdfReader(pdf_path)\n        actual_pages = len(reader.pages)\n        \n        # Check page count if expected\n        if expected_pages is not None and actual_pages != expected_pages:\n            return False, f\"Expected {expected_pages} pages, got {actual_pages}\"\n        \n        return True, f\"Valid PDF with {actual_pages} page(s)\"\n        \n    except Exception as e:\n        return False, f\"PDF verification failed: {str(e)}\"\n\n# Example usage\npdf_files = [\n    (\"listings.pdf\", 2),\n    (\"map.pdf\", 1),\n]\n\nall_valid = True\nfor pdf_path, expected in pdf_files:\n    valid, message = verify_pdf(pdf_path, expected)\n    print(f\"{pdf_path}: {'✓' if valid else '✗'} {message}\")\n    if not valid:\n        all_valid = False\n\nif not all_valid:\n    raise Exception(\"PDF verification failed - review and regenerate\")\n```\n\n### 3. Use run_shell for Verification\n\nExecute the verification using `run_shell`:\n\n```bash\npython -c \"\nfrom PyPDF2 import PdfReader\nimport sys\n\npdf_path = 'output.pdf'\nexpected = 2\n\ntry:\n    reader = PdfReader(pdf_path)\n    actual = len(reader.pages)\n    if actual != expected:\n        print(f'ERROR: Expected {expected} pages, got {actual}')\n        sys.exit(1)\n    print(f'OK: {pdf_path} has {actual} page(s)')\nexcept Exception as e:\n    print(f'ERROR: {e}')\n    sys.exit(1)\n\"\n```\n\n### 4. Verify Before Completion\n\n**Critical:** Only mark your task as complete after ALL PDF verification checks pass. If verification fails:\n\n1. Examine the error message\n2. Regenerate the PDF with corrected formatting\n3. Re-run verification\n4. Repeat until all checks pass\n\n## Common Issues Caught\n\n- Wrong page counts (e.g., content spilling to extra pages)\n- Empty or corrupted PDF files\n- PDFs that fail to open properly\n- Missing expected sections due to formatting errors\n\n## Example Workflow\n\n```python\n# 1. Generate PDF\ngenerate_pdf(\"listings.pdf\", content)\n\n# 2. Verify before completion\nvalid, msg = verify_pdf(\"listings.pdf\", expected_pages=2)\nif not valid:\n    # Fix and regenerate\n    regenerate_pdf(\"listings.pdf\", corrected_content)\n    valid, msg = verify_pdf(\"listings.pdf\", expected_pages=2)\n\n# 3. 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