code: def initialize(context):
      log.info("initializing")
      context.asset = symbol("eth_btc")
      context.base_price = None
  
file_path: catalyst/catalyst/examples/simple_loop.py
imports: import pandas
  import talib
  from logbook import Logger, INFO
  from catalyst import run_algorithm
  from catalyst.api import symbol, record
  from catalyst.exchange.utils.stats_utils import get_pretty_stats, extract_transactions
label_desc: Use image node_id 1 for calling a global function with example usage: initialize(context) without return types