code: def get_all_lexers():
      """Return a generator of tuples in the form ``(name, aliases,
      filenames, mimetypes)`` of all know lexers.
      """
      for item in itervalues(LEXERS):
          yield item[1:]
      for lexer in find_plugin_lexers():
          yield lexer.name, lexer.aliases, lexer.filenames, lexer.mimetypes
  
imports: import re
  import sys
  import types
  import fnmatch
  from os.path import basename
  from pygments.lexers._mapping import LEXERS
  from pygments.modeline import get_filetype_from_buffer
  from pygments.plugin import find_plugin_lexers
  from pygments.util import ClassNotFound, itervalues, guess_decode, text_type
label_desc: Use image node_id 3 for calling a global function with example usage: get_all_lexers() without return types