winziprint: delete temp files in finally block

winziprint/winziprint.py

@@ -19,6 +19,7 @@ def convert(input_file_names: list[str], output_file_name: str, encoding: str =
     page_nums = []
     tmp_file_names = []
 
+    try:
         for i in range(0, len(input_file_names), BATCH_SIZE):
             batch = input_file_names[i:i + BATCH_SIZE]
             documents = []
@@ -39,9 +40,13 @@ def convert(input_file_names: list[str], output_file_name: str, encoding: str =
         merger = pypdf.PdfWriter()
         for pdf in tmp_file_names:
             merger.append(pdf)
-        os.remove(pdf)
         merger.write(output_file_name)
         merger.close()
+        del merger
+    finally:
+        for pdf in tmp_file_names:
+            if os.path.isfile(pdf):
+                os.remove(pdf)
 
     return page_nums
 
@@ -59,6 +64,8 @@ def _wrapper_convert(args: list[str], encoding: str = None) -> None:
         msg = str(e).replace('\n', ' ')
         print(f'error: {msg}', flush=True)
         traceback.print_exception(e)
+    finally:
+        gc.collect()
 
 
 def usage() -> None: