docstr: Processes a list of splits by modifying any open orders as needed.
  
  Parameters
  ----------
  splits: list
      A list of splits.  Each split is a tuple of (asset, ratio).
  
  Returns
  -------
  None
docstr_tok: ["Processes","a","list","of","splits","by","modifying","any","open","orders","as","needed",".","Parameters","--","--","--","--","--","splits",":","list","A","list","of","splits",".","Each","split","is","a","tuple","of","(","asset",",","ratio",")",".","Returns","--","--","--","-","None"]
code: def process_splits(self, splits):
      """
      Processes a list of splits by modifying any open orders as needed.
  
      Parameters
      ----------
      splits: list
          A list of splits.  Each split is a tuple of (asset, ratio).
  
      Returns
      -------
      None
      """
      for asset, ratio in splits:
          if asset not in self.open_orders:
              continue
  
          orders_to_modify = self.open_orders[asset]
          for order in orders_to_modify:
              order.handle_split(ratio)
  
imports: from logbook import Logger
  from collections import defaultdict
  from copy import copy
  from six import iteritems
  from zipline.assets import Equity, Future, Asset
  from .blotter import Blotter
  from zipline.extensions import register
  from zipline.finance.order import Order
  from zipline.finance.slippage import DEFAULT_FUTURE_VOLUME_SLIPPAGE_BAR_LIMIT, VolatilityVolumeShare, FixedBasisPointsSlippage
  from zipline.finance.commission import DEFAULT_PER_CONTRACT_COST, FUTURE_EXCHANGE_FEES_BY_SYMBOL, PerContract, PerShare
  from zipline.utils.input_validation import expect_types
label_desc: Use image node_id 9 for calling the SimulationBlotter obj's underlying member method code with example usage: obj.process_splits(splits) without return types