From 1c07777e135d28fffa157019f90ccdaa002b614e Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Thu, 5 Nov 2020 03:10:06 +0100
Subject: [PATCH] follow-up prev

ah, forgot to commit this file
---
 electrum/wallet.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/electrum/wallet.py b/electrum/wallet.py
index d13b6e2ea..d976a001c 100644
--- a/electrum/wallet.py
+++ b/electrum/wallet.py
@@ -1950,7 +1950,11 @@ class Abstract_Wallet(AddressSynchronizer, ABC):
         return out
 
     @abstractmethod
-    def get_fingerprint(self):
+    def get_fingerprint(self) -> str:
+        """Returns a string that can be used to identify this wallet.
+        Used e.g. by Labels plugin, and LN channel backups.
+        Returns empty string "" for wallets that don't have an ID.
+        """
         pass
 
     def can_import_privkey(self):