better "addrmeta is None" fix

src/dexorder/addrmeta.py

@@ -19,7 +19,9 @@ class AddressMetadata (TypedDict):
 
 
 def save_addrmeta(address: str, meta: AddressMetadata):
-    if meta['type'] == 'Token':
+    if meta is None:
+        pass
+    elif meta['type'] == 'Token':
         meta: OldTokenDict
         updated = Token.load(meta)
         token = db.session.get(Token, (current_chain.get().id, address))

src/dexorder/pools.py

@@ -27,16 +27,12 @@ async def get_pool(address: str) -> OldPoolDict:
         # noinspection PyTypeChecker
         result: OldPoolDict = address_metadata[address]
     except KeyError:
-        result = await load_pool(address)
-        if result is not None:
-            address_metadata[address] = result
+        result = address_metadata[address] = await load_pool(address)
     else:
         if (result['exchange'] == Exchange.UniswapV3.value and
                 (result['base'] == ADDRESS_0 or result['quote'] == ADDRESS_0)):
             log.warning(f'Repairing bad pool {address}')
-            result = await load_pool(address, use_db=False)
-            if result is not None:
-                address_metadata[address] = result
+            result = address_metadata[address] = await load_pool(address, use_db=False)
     return result
 
 

src/dexorder/tokens.py

@@ -52,9 +52,7 @@ async def get_token(address) -> Optional[OldTokenDict]:
         # noinspection PyTypeChecker
         return address_metadata[address]
     except KeyError:
-        result = await load_token(address)
-        if result is not None:
-            address_metadata[address] = result
+        result = address_metadata[address] = await load_token(address)
         return result