electrum

commit d641dfe964d7aad3103d99e0db6d9406cc0cd91e
parent 0828454ef1bda75f7436b39225ed6cd31edc4fa7
Author: SomberNight <somber.night@protonmail.com>
Date:   Mon,  9 Dec 2019 17:43:08 +0100

follow-up prev: add comment

Diffstat:
M
electrum/keystore.py
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/electrum/keystore.py b/electrum/keystore.py
@@ -411,6 +411,8 @@ class Xpub:
         self._root_fingerprint = root_fingerprint
         self._derivation_prefix = normalize_bip32_derivation(derivation_prefix)
 
+    # note: this helper method exists as derive_pubkey returns hex strings,
+    #       and it saves space to cache bytes instead
     @lru_cache(maxsize=None)
     def _derive_pubkey_bytes(self, for_change: int, n: int) -> bytes:
         assert for_change in (0, 1)