class_docstr: :class:`.History` class that stores all strings in a file.
class_docstr_tok: [":","class",":","`",".History","`","class","that","stores","all","strings","in","a","file","."]
code: def __init__(self, filename):
      self.strings = []
      self.filename = filename
  
      self._load()
  
imports: from __future__ import unicode_literals
  from abc import ABCMeta, abstractmethod
  from six import with_metaclass
  import datetime
  import os
label_desc: Use image node_id 1 to create a new FileHistory object from inherited base classes: History with example: obj = FileHistory(filename)