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 catalyst.assets import Equity, Future, Asset
  from catalyst.finance.order import Order
  from catalyst.finance.slippage import DEFAULT_FUTURE_VOLUME_SLIPPAGE_BAR_LIMIT, VolatilityVolumeShare, VolumeShareSlippage
  from catalyst.finance.commission import DEFAULT_PER_CONTRACT_COST, FUTURE_EXCHANGE_FEES_BY_SYMBOL, PerContract, PerShare
  from catalyst.finance.cancel_policy import NeverCancel
  from catalyst.utils.input_validation import expect_types
  from catalyst.constants import LOG_LEVEL
label_desc: Use image node_id 11 for calling the Blotter obj's underlying member method code with example usage: obj.process_splits(splits) without return types