code: def initialize(context):
      log.info("initializing algo")
      context.ASSET_NAME = "btc_usdt"
      context.asset = symbol(context.ASSET_NAME)
  
      context.TARGET_POSITIONS = 30
      context.PROFIT_TARGET = 0.1
      context.SLIPPAGE_ALLOWED = 0.02
  
      context.errors = []
      pass
  
file_path: catalyst/catalyst/examples/buy_low_sell_high.py
imports: import talib
  import pandas
  from logbook import Logger
  from catalyst.api import order, order_target_percent, symbol, record
  from catalyst.exchange.utils.stats_utils import get_pretty_stats
  from catalyst.utils.run_algo import run_algorithm
label_desc: Use image node_id 1 for calling a global function with example usage: initialize(context) without return types