check if annotations.pdf already exists

1 files changed, 6 insertions, 2 deletions

diff --git a/annotation-summary.py b/annotation-summary.py
index 0b0fb5e..969874b 100755
--- a/annotation-summary.py
+++ b/annotation-summary.py
@@ -1,8 +1,9 @@
 #!/usr/bin/env python3
 
 import argparse
-import popplerqt5
+import os
 import pdfkit
+import popplerqt5
 
 def extract(fn, show=False):
     doc = popplerqt5.Poppler.Document.load(fn)
@@ -57,7 +58,10 @@ def generate_pdf(annotations, destination="annotations.pdf", pagesize="A4"):
             </body>
         </html>
     """
-    pdfkit.from_string(blocks, destination, options=options)
+    if os.path.exists(destination):
+        print(f"Error: {destination} already exists. Quitting.")
+    else:
+        pdfkit.from_string(blocks, destination, options=options)
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()