class_docstr: Fake GRIB file returned by pygrib.open.
class_docstr_tok: ["Fake","GRIB","file","returned","by","pygrib.open","."]
docstr: Iterate over messages.
docstr_tok: ["Iterate","over","messages","."]
code: def __iter__(self):
      """Iterate over messages."""
      return iter(self._messages)
  
imports: import sys
  import unittest
  from datetime import datetime
  from unittest import mock
  import numpy
  from pytest import approx
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 4 for calling the FakeGRIB obj's underlying member method code with example usage: obj.__iter__() and returns: iter