class_docstr: Source for backtesting parameters. This class is thread safe.
class_docstr_tok: ["Source","for","backtesting","parameters",".","This","class","is","thread","safe","."]
code: def eof(self):
      with self.__lock:
          return self.__iter is None
  
file_path: pyalgotrade/pyalgotrade/optimizer/base.py
imports: import threading
  import six
label_desc: Use image node_id 3 for calling the ParameterSource obj's underlying member method code with example usage: obj.eof() and returns: unknown