Don't bother casting `AggTrade` values for now, just floatify the price/quantity

piker/brokers/binance.py

@@ -60,11 +60,11 @@ from ..accounting._mktinfo import (
     MktPair,
     digits_to_dec,
 )
-from . import (
+from .._cacheables import open_cached_client
+from ._util import (
     resproc,
     SymbolNotFound,
     DataUnavailable,
-    open_cached_client,
 )
 from ._util import (
     get_logger,
@@ -288,6 +288,7 @@ class Client:
         params: dict | OrderedDict,
         signed: bool = False,
         action: str = 'get'
+
     ) -> dict[str, Any]:
 
         if signed:
@@ -296,7 +297,7 @@ class Client:
         resp = await getattr(self._sesh, action)(
             path=f'/api/v3/{method}',
             params=params,
-            timeout=float('inf')
+            timeout=float('inf'),
         )
 
         return resproc(resp, log)
@@ -476,6 +477,7 @@ class Client:
     async def get_positions(
         self,
         recv_window: int = 60000
+
     ) -> tuple:
         positions = {}
         volumes = {}
@@ -509,7 +511,8 @@ class Client:
         return await self._sapi(
             'capital/deposit/hisrec',
             params=params,
-            signed=True)
+            signed=True,
+        )
 
     async def get_withdrawls(
         self,
@@ -523,7 +526,8 @@ class Client:
         return await self._sapi(
             'capital/withdraw/history',
             params=params,
-            signed=True)
+            signed=True,
+        )
 
     async def submit_limit(
         self,
@@ -732,7 +736,7 @@ async def stream_messages(
                 # ``msgspec.Struct`` does not runtime-validate until you
                 # decode/encode, see:
                 # https://jcristharif.com/msgspec/structs.html#type-validation
-                msg = AggTrade(**msg)
+                msg = AggTrade(**msg)  # TODO: should we .copy() ?
                 yield 'trade', {
                     'symbol': msg.s,
                     'last': msg.p,