Update api.py

Now we get the data for an e specific expiration date if and expiry_date is passed, or for all expiration if expiry_date is None

piker/brokers/deribit/api.py

@@ -123,7 +123,7 @@ def str_to_cb_sym(name: str) -> Symbol:
 
     if option_type == 'put':
         option_type = PUT 
-    elif option_type  == 'call':
+    elif option_type == 'call':
         option_type = CALL
     else:
         raise Exception("Couldn\'t parse option type")
@@ -382,6 +382,7 @@ class Client:
         currency: str = 'btc',
         kind: str = 'option',
         expired: bool = False,
+        expiry_date: str = None,
 
     ) -> list[Symbol]:
         """
@@ -400,9 +401,11 @@ class Client:
         resp = r.result 
         response_list = []
 
-        for i in range(len(resp) // 10):
+        for i in range(len(resp)):
             element = resp[i]
-            response_list.append(piker_sym_to_cb_sym(element['instrument_name']))
+            name = f'{element["instrument_name"].split("-")[1]}'
+            if not expiry_date or name == expiry_date.upper():
+                response_list.append(piker_sym_to_cb_sym(element['instrument_name']))
 
         return response_list
 
@@ -879,7 +882,9 @@ async def open_oi_feed(
     ) as client:
         # to get all currencies available in deribit
         # currencies = await client.get_currencies()
-        instruments = await client.get_instruments()
+        instruments = await client.get_instruments(
+            expiry_date='6DEC24'
+        )
 
     open_interests: dict[str, dict[str, dict[str, list[dict[str, Decimal]]]]] = {}
     fh: FeedHandler