code: def __setitem__(self, key, value):
      with timer("write %s" % key):
          if isinstance(value, pandas.core.frame.DataFrame):
              if len(value):
                  for c in value.columns:
                      first = value[c].iloc[0]
                      if isinstance(first, datetime) and type(
                          first.tzinfo
                      ).__name__.startswith("GMT"):
                          value[c] = pandas.to_datetime(
                              value[c], utc=True
                          )
  
          with open(self._path(key), "wb") as f:
              pickle.dump(value, f, pickle.HIGHEST_PROTOCOL)
              gc.collect()
  
      if self.limit is not None:
          if os.path.getsize(self._path(key)) > self.limit:
              raise MemoryError(
                  "disk cache limit exceeded by single key: %s" % key
              )
  
          with timer("evict %s" % key):
              while self.size() > self.limit:
                  del self[self.lru()]
              gc.collect()
  
imports: import os
  import gc
  import pickle
  import lore
  from lore.stores.base import Base
  from lore.util import timer
  from lore.env import require
  import pandas
  from datetime import datetime
label_desc: Use image node_id 3 for calling the Disk obj's underlying member method code with example usage: obj.__setitem__(key, value) without return types