class_docstr: Pull out contiguous comment blocks.
      
class_docstr_tok: ["Pull","out","contiguous","comment","blocks","."]
docstr: Make the index mapping lines of actual code to their associated
  prefix comments.
docstr_tok: ["Make","the","index","mapping","lines","of","actual","code","to","their","associated","prefix","comments","."]
code: def make_index(self):
      """Make the index mapping lines of actual code to their associated
      prefix comments.
      """
      for prev, block in zip(self.blocks[:-1], self.blocks[1:]):
          if not block.is_comment:
              self.index[block.start_lineno] = prev
  
imports: from __future__ import division, absolute_import, print_function
  import sys
  import compiler
  import inspect
  import textwrap
  import tokenize
  from .compiler_unparse import unparse
label_desc: Use image node_id 6 for calling the CommentBlocker obj's underlying member method code with example usage: obj.make_index() without return types