class_docstr: Very simple cache that discards the oldest item when the cache size is
  exceeded.
  
  :param maxsize: Maximum size of the cache. (Don't make it too big.)
class_docstr_tok: ["Very","simple","cache","that","discards","the","oldest","item","when","the","cache","size","is","exceeded",".",":","param","maxsize",":","Maximum","size","of","the","cache",".","(","Do","n't","make","it","too","big",".",")"]
docstr: Clear cache. 
docstr_tok: ["Clear","cache","."]
code: def clear(self):
      "Clear cache."
      self._data = {}
      self._keys = deque()
  
file_path: catboost/contrib/python/prompt-toolkit/py2/prompt_toolkit/cache.py
imports: from __future__ import unicode_literals
  from collections import deque
  from functools import wraps
label_desc: Use image node_id 3 for calling the SimpleCache obj's underlying member method code with example usage: obj.clear() without return types