util.Satoshis: note that sometimes this actually has 'msat' precision

electrum/util.py

@@ -208,13 +208,15 @@ class Satoshis(object):
 
     def __new__(cls, value):
         self = super(Satoshis, cls).__new__(cls)
+        # note: 'value' sometimes has msat precision
         self.value = value
         return self
 
     def __repr__(self):
-        return 'Satoshis(%d)'%self.value
+        return f'Satoshis({self.value})'
 
     def __str__(self):
+        # note: precision is truncated to satoshis here
         return format_satoshis(self.value)
 
     def __eq__(self, other):

electrum/wallet.py

@@ -765,6 +765,7 @@ class Abstract_Wallet(AddressSynchronizer, ABC):
                 value += item['bc_value'].value
             if item.get('ln_value'):
                 value += item.get('ln_value').value
+            # note: 'value' and 'balance' has msat precision (as LN has msat precision)
             item['value'] = Satoshis(value)
             balance += value
             item['balance'] = Satoshis(balance)
@@ -2426,7 +2427,7 @@ class Wallet(object):
     This class is actually a factory that will return a wallet of the correct
     type when passed a WalletStorage instance."""
 
-    def __new__(self, db, storage: WalletStorage, *, config: SimpleConfig):
+    def __new__(self, db: 'WalletDB', storage: Optional[WalletStorage], *, config: SimpleConfig):
         wallet_type = db.get('wallet_type')
         WalletClass = Wallet.wallet_class(wallet_type)
         wallet = WalletClass(db, storage, config=config)