class_docstr: A line-based string reader.
  
      
class_docstr_tok: ["A","line-based","string","reader","."]
code: def __getitem__(self, n):
      return self._str[n]
  
imports: import inspect
  import textwrap
  import re
  import pydoc
  from warnings import warn
label_desc: Use image node_id 2 for calling the Reader obj's underlying member method code with example usage: obj.__getitem__(n) and returns: self