Fix logging with rotation

conjurer_librarian/conjurer_librarian.py

@@ -1,3 +1,4 @@
+from logging import handlers
 import re
 import logging
 import threading
@@ -313,6 +314,15 @@ async def get_partial():
 #=======================================MAIN===================================================
 if __name__ == "__main__":
     app.logger.setLevel(logging.DEBUG)
+    h1 = handlers.RotatingFileHandler(
+    filename="E:\\logs\\librarian.log",
+    encoding="utf-8",
+    mode="a",
+    maxBytes=6 * 1024 * 1024,
+    backupCount=6,
+    )
+
+    app.logger.addHandler(h1)
     threads = []
     threads.append(threading.Thread(target=waitress_run))
     #threads.append(threading.Thread(target=flask_debug))