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diff --git a/Exam_review.ipynb b/_PythonExam_review.ipynb
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    ],
    "source": [
     "# write messages or data to file\n",
+
     "fid = open('msg.txt','w')\n",
     "fid.write('Writing to a text file \\n')\n",
     "fid.write('Second line')\n",