From d641dfe964d7aad3103d99e0db6d9406cc0cd91e Mon Sep 17 00:00:00 2001 From: SomberNight Date: Mon, 9 Dec 2019 17:43:08 +0100 Subject: [PATCH] follow-up prev: add comment --- electrum/keystore.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/electrum/keystore.py b/electrum/keystore.py index 264f2db93..075e4e605 100644 --- 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)