max_pain-script: bit of multi-line fmting

examples/max_pain.py

@@ -2,22 +2,29 @@
 from decimal import (
     Decimal,
 )
+from pathlib import Path
+
 import numpy as np
-import polars as pl
+# import polars as pl
 import trio
 import tractor
 from datetime import datetime
-from pprint import pformat
+# from pprint import pformat
 from piker.brokers.deribit.api import (
     get_client,
     maybe_open_oi_feed,
 )
 from piker.storage import open_storage_client, StorageClient
+from piker.log import get_logger
 import sys
 import pyqtgraph as pg
 from PyQt6 import QtCore
 from pyqtgraph import ScatterPlotItem, InfiniteLine
 from PyQt6.QtWidgets import QApplication
+from cryptofeed.symbols import Symbol
+
+
+log = get_logger(__name__)
 # XXX, use 2 newlines between top level LOC (even between these
 # imports and the next function line ;)
 
@@ -47,9 +54,13 @@ async def max_pain_daemon(
             kind=kind
         )
 
-        print(f'Available expiration dates for {currency}-{kind}:')
+        log.info(
-        print(f'{expiry_dates}')
+            f'Available expiries for {currency!r}-{kind}:\n'
-        expiry_date = input('Please enter a valid expiration date: ').upper()
+            f'{expiry_dates}\n'
+        )
+        expiry_date: str = input(
+            'Please enter a valid expiration date: '
+        ).upper()
         print('Starting little daemon...')
 
         # maybe move this type annot down to the assignment line?
@@ -192,10 +203,13 @@ async def max_pain_daemon(
                 ),
             ], dtype=dtype)
 
-            path = await client.write_oi(
+            path: Path = await client.write_oi(
                 col_sym_key,
                 data,
             )
+            # TODO, use std logging like this throughout for status
+            # emissions on console!
+            log.info(f'Wrote OI history to {path}')
 
     def get_max_pain(
         oi_by_strikes: dict[str, dict[str, Decimal]]
@@ -258,7 +272,7 @@ async def max_pain_daemon(
                     # hardcoded to something, sorry.)
                     timestamp = msg[1]['timestamp']
                     max_pain = get_max_pain(oi_by_strikes)
-                    intrinsic_values = get_total_intrinsic_values(oi_by_strikes)
+                    # intrinsic_values = get_total_intrinsic_values(oi_by_strikes)
 
                     # graph here
                     plot_graph(oi_by_strikes, plot)
@@ -298,14 +312,27 @@ async def max_pain_daemon(
 
 async def main():
 
-    async with tractor.open_nursery() as n:
+    async with tractor.open_nursery(
+        debug_mode=True,
+        loglevel='info',
+    ) as an:
+        from tractor import log
+        log.get_console_log(level='info')
 
-        p: tractor.Portal = await n.start_actor(
+        ptl: tractor.Portal = await an.start_actor(
             'max_pain_daemon',
             enable_modules=[__name__],
             infect_asyncio=True,
+            # ^TODO, we can actually run this in the root-actor now
+            # if needed as per 2nd "section" in,
+            # https://pikers.dev/goodboy/tractor/pulls/2
+            #
+            # NOTE, will first require us porting to modern
+            # `tractor:main` though ofc!
+
         )
-        await p.run(max_pain_daemon)
+        await ptl.run(max_pain_daemon)
+
 
 if __name__ == '__main__':
     trio.run(main)

piker/brokers/deribit/api.py

@@ -1,5 +1,5 @@
 # piker: trading gear for hackers
-# Copyright (C) Guillermo Rodriguez (in stewardship for piker0)
+# Copyright (C) Guillermo Rodriguez (in stewardship for pikers)
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License as published by
@@ -80,7 +80,6 @@ from piker.accounting import (
 from piker.data import (
     def_iohlcv_fields,
     match_from_pairs,
-    # Struct,
 )
 from piker.data._web_bs import (
     open_jsonrpc_session
@@ -195,7 +194,11 @@ def cb_sym_to_deribit_inst(sym: Symbol) -> str:
 
 
 def get_values_from_cb_normalized_date(expiry_date: str) -> str:
-    # deribit specific
+    '''
+    Convert the `cryptofeed` (expiry) datetime format to our own,
+    a simple 3 token `str: f'{day}{month}{year}'.
+
+    '''
     cb_norm = [
         'F', 'G', 'H', 'J',
         'K', 'M', 'N', 'Q',
@@ -328,7 +331,6 @@ class Client:
         '''
         Return the set of currencies for deribit.
         '''
-        assets = {}
         resp = await self._json_rpc_auth_wrapper(
             'public/get_currencies',
             params={}