Make explicit the node param in init_wallet()

test/functional/test_framework/test_framework.py

@@ -423,12 +423,12 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
 
     def import_deterministic_coinbase_privkeys(self):
         for i in range(self.num_nodes):
-            self.init_wallet(i)
+            self.init_wallet(node=i)
 
-    def init_wallet(self, i):
-        wallet_name = self.default_wallet_name if self.wallet_names is None else self.wallet_names[i] if i < len(self.wallet_names) else False
+    def init_wallet(self, *, node):
+        wallet_name = self.default_wallet_name if self.wallet_names is None else self.wallet_names[node] if node < len(self.wallet_names) else False
         if wallet_name is not False:
-            n = self.nodes[i]
+            n = self.nodes[node]
             if wallet_name is not None:
                 n.createwallet(wallet_name=wallet_name, descriptors=self.options.descriptors, load_on_startup=True)
             n.importprivkey(privkey=n.get_deterministic_priv_key().key, label='coinbase')