descriptor.py: speed-up DescriptorChecksum a bit

2023-02-26 11:36:47 +00:00
parent 9d3f53932b
commit 001ca775a9
2 changed files with 10 additions and 7 deletions
--- a/electrum/segwit_addr.py
+++ b/electrum/segwit_addr.py
@@ -25,7 +25,7 @@ from enum import Enum
 from typing import Tuple, Optional, Sequence, NamedTuple, List

 CHARSET = "qpzry9x8gf2tvdw0s3jn54khce6mua7l"
-_CHARSET_INVERSE = {x: CHARSET.find(x) for x in CHARSET}
+_CHARSET_INVERSE = {c: i for (i, c) in enumerate(CHARSET)}

 BECH32_CONST = 1
 BECH32M_CONST = 0x2bc830a3