完善采购审批流程、企业微信通知和采购专用章

tools/pdf_preview.py

@@ -5,7 +5,8 @@ import sys
 
 import pymupdf
 
-OUT = r"D:\2026-09-09-task-18\tools\out"
+OUT = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'out')
+os.makedirs(OUT, exist_ok=True)
 
 
 def render(pdf, pages=(0,), dpi=110, prefix=None):
@@ -20,6 +21,7 @@ def render(pdf, pages=(0,), dpi=110, prefix=None):
         pix.save(path)
         print(path)
     print("pages:", len(doc))
+    doc.close()
 
 
 if __name__ == "__main__":