refactor

cashu/core/helpers.py

@@ -1,9 +1,15 @@
 import asyncio
 from functools import partial, wraps
+from typing import List
 
+from cashu.core.base import Proof
 from cashu.core.settings import LIGHTNING_FEE_PERCENT, LIGHTNING_RESERVE_FEE_MIN
 
 
+def sum_proofs(proofs: List[Proof]):
+    return sum([p.amount for p in proofs])
+
+
 def async_wrap(func):
     @wraps(func)
     async def run(*args, loop=None, executor=None, **kwargs):