text: """ Fixer for imports of itertools.(imap|ifilter|izip|ifilterfalse) """
  
  # Local imports
  from lib2to3 import fixer_base
  from lib2to3.fixer_util import BlankLine, syms, token
  
  
  class FixItertoolsImports(fixer_base.BaseFix):
      BM_compatible = True
      PATTERN = """
                import_from< 'from' 'itertools' 'import' imports=any >
                """ %(locals())
  
      def transform(self, node, results):
          imports = results['imports']
          if imports.type == syms.import_as_name or not imports.children:
              children = [imports]
          else:
              children = imports.children
          for child in children[::2]:
              if child.type == token.NAME:
                  member = child.value
                  name_node = child
              elif child.type == token.STAR:
                  # Just leave the import as is.
                  return
              else:
                  assert child.type == syms.import_as_name
                  name_node = child.children[0]
              member_name = name_node.value
              if member_name in ('imap', 'izip', 'ifilter'):
                  child.value = None
                  child.remove()
              elif member_name in ('ifilterfalse', 'izip_longest'):
                  node.changed()
                  name_node.value = ('filterfalse' if member_name[1] == 'f'
                                     else 'zip_longest')
  
          # Make sure the import statement is still sane
          children = imports.children[:] or [imports]
          remove_comma = True
          for child in children:
              if remove_comma and child.type == token.COMMA:
                  child.remove()
              else:
                  remove_comma ^= True
  
          while children and children[-1].type == token.COMMA:
              children.pop().remove()
  
          # If there are no imports left, just get rid of the entire statement
          if (not (imports.children or getattr(imports, 'value', None)) or
              imports.parent is None):
              p = node.prefix
              node = BlankLine()
              node.prefix = p
              return node
  