code: def visit_ForInStatNode(self, node):
      # TODO: Remove redundancy with range optimization...
      is_special = False
      sequence = node.iterator.sequence
      target = node.target
      if isinstance(sequence, ExprNodes.SimpleCallNode):
          function = sequence.function
          if sequence.self is None and function.is_name:
              entry = self.current_env().lookup(function.name)
              if not entry or entry.is_builtin:
                  if (
                      function.name == "reversed"
                      and len(sequence.args) == 1
                  ):
                      sequence = sequence.args[0]
                  elif (
                      function.name == "enumerate"
                      and len(sequence.args) == 1
                  ):
                      if (
                          target.is_sequence_constructor
                          and len(target.args) == 2
                      ):
                          iterator = sequence.args[0]
                          if iterator.is_name:
                              iterator_type = iterator.infer_type(
                                  self.current_env()
                              )
                              if iterator_type.is_builtin_type:
                                  # assume that builtin types have a length within Py_ssize_t
                                  self.mark_assignment(
                                      target.args[0],
                                      ExprNodes.IntNode(
                                          target.pos,
                                          value="PY_SSIZE_T_MAX",
                                          type=PyrexTypes.c_py_ssize_t_type,
                                      ),
                                  )
                                  target = target.args[1]
                                  sequence = sequence.args[0]
      if isinstance(sequence, ExprNodes.SimpleCallNode):
          function = sequence.function
          if sequence.self is None and function.is_name:
              entry = self.current_env().lookup(function.name)
              if not entry or entry.is_builtin:
                  if function.name in ("range", "xrange"):
                      is_special = True
                      for arg in sequence.args[:2]:
                          self.mark_assignment(target, arg)
                      if len(sequence.args) > 2:
                          self.mark_assignment(
                              target,
                              ExprNodes.binop_node(
                                  node.pos,
                                  "+",
                                  sequence.args[0],
                                  sequence.args[2],
                              ),
                          )
  
      if not is_special:
          # A for-loop basically translates to subsequent calls to
          # __getitem__(), so using an IndexNode here allows us to
          # naturally infer the base type of pointers, C arrays,
          # Python strings, etc., while correctly falling back to an
          # object type when the base type cannot be handled.
          self.mark_assignment(
              target,
              ExprNodes.IndexNode(
                  node.pos,
                  base=sequence,
                  index=ExprNodes.IntNode(
                      target.pos,
                      value="PY_SSIZE_T_MAX",
                      type=PyrexTypes.c_py_ssize_t_type,
                  ),
              ),
          )
  
      self.visitchildren(node)
      return node
  
imports: from __future__ import absolute_import
  from .Errors import error, message
  from .None import ExprNodes
  from .None import Nodes
  from .None import Builtin
  from .None import PyrexTypes
  from ..None import Utils
  from .PyrexTypes import py_object_type, unspecified_type
  from .Visitor import CythonTransform, EnvTransform
label_desc: Use image node_id 7 for calling the MarkParallelAssignments obj's underlying member method code with example usage: obj.visit_ForInStatNode(node) and returns: node