text: """Fixer that changes unicode to str, unichr to chr, and u"..." into "...".
  
  """
  
  import re
  from ..pgen2 import token
  from .. import fixer_base
  
  _mapping = {"unichr" : "chr", "unicode" : "str"}
  _literal_re = re.compile(r"[uU][rR]?[\'\"]")
  
  class FixUnicode(fixer_base.BaseFix):
      BM_compatible = True
      PATTERN = "STRING | 'unicode' | 'unichr'"
  
      def transform(self, node, results):
          if node.type == token.NAME:
              new = node.clone()
              new.value = _mapping[node.value]
              return new
          elif node.type == token.STRING:
              if _literal_re.match(node.value):
                  new = node.clone()
                  new.value = new.value[1:]
                  return new
  