Refactoring

app/main.py

@@ -37,6 +37,7 @@ async def convert(
     temp_filename = str(temp_uuid) + ".fb2"
     converted_temp_filename = str(temp_uuid) + "." + format_lower
 
+    try:
         async with aiofiles.open(temp_filename, "wb") as f:
             while content := await file.read(1024):
                 if isinstance(content, str):
@@ -55,7 +56,7 @@ async def convert(
         )
 
         _, stderr = await proc.communicate()
-
+    finally:
         await aiofiles.os.remove(temp_filename)
 
     if proc.returncode != 0 or len(stderr) != 0:
@@ -69,10 +70,11 @@ async def convert(
         )
 
     async def result_iterator() -> AsyncIterator[bytes]:
+        try:
             async with aiofiles.open(converted_temp_filename, "rb") as f:
                 while data := await f.read(2048):
                     yield data
-
+        finally:
             await aiofiles.os.remove(converted_temp_filename)
 
     return StreamingResponse(result_iterator())