piker/piker/watchlists.py

56 lines
1.4 KiB
Python

import os
import json
from collections import defaultdict
from .log import get_logger
log = get_logger(__name__)
_builtins = {
'indexes': ['SPY', 'DAX', 'QQQ', 'DIA'],
}
def write_to_file(watchlist, path):
for key in watchlist:
watchlist[key] = sorted(list(set(watchlist[key])))
with open(path, 'w') as f:
json.dump(watchlist, f, sort_keys=True, indent=4)
def make_config_dir(dir_path):
if not os.path.isdir(dir_path):
log.debug(f"Creating config dir {dir_path}")
os.makedirs(dir_path)
def ensure_watchlists(file_path):
mode = 'r' if os.path.isfile(file_path) else 'w'
with open(file_path, mode) as f:
return json.load(f) if not os.stat(file_path).st_size == 0 else {}
def add_ticker(name, ticker_name, watchlist):
watchlist.setdefault(name, []).append(str(ticker_name).upper())
return watchlist
def remove_ticker(name, ticker_name, watchlist):
watchlist[name].remove(str(ticker_name).upper())
if watchlist[name] == []:
del watchlist[name]
return watchlist
def delete_group(name, watchlist):
watchlist.pop(name, None)
return watchlist
def merge_watchlist(watchlist_to_merge, watchlist):
merged_watchlist = defaultdict(list)
for d in (watchlist, watchlist_to_merge):
for key, value in d.items():
merged_watchlist[key].extend(value)
return merged_watchlist