examples/ch08/snippets_ipynb/08_12.03selfcheck.ipynb

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    "![Self Check Exercises check mark image](files/art/check.png)\n",
    "# 8.12.3 Self Check"
   ]
  },
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    "**2. _(IPython Session)_** Assume you have a string representing an addition problem such as \n",
    "```python\n",
    "'10 + 5'\n",
    "```\n",
    "Use a regular expression to break the string into three groups representing the two operands and the operator, then display the groups.\n",
    "\n",
    "**Answer:** `"
   ]
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   "source": [
    "import re"
   ]
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   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "result = re.search(r'(\\d+) ([-+*/]) (\\d+)', '10 + 5')"
   ]
  },
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   "source": [
    "result.groups()"
   ]
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   "outputs": [],
   "source": [
    "result.group(1)"
   ]
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   "metadata": {},
   "outputs": [],
   "source": [
    "result.group(2)"
   ]
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   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "result.group(3)"
   ]
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   "source": [
    "##########################################################################\n",
    "# (C) Copyright 2019 by Deitel & Associates, Inc. and                    #\n",
    "# Pearson Education, Inc. All Rights Reserved.                           #\n",
    "#                                                                        #\n",
    "# DISCLAIMER: The authors and publisher of this book have used their     #\n",
    "# best efforts in preparing the book. These efforts include the          #\n",
    "# development, research, and testing of the theories and programs        #\n",
    "# to determine their effectiveness. The authors and publisher make       #\n",
    "# no warranty of any kind, expressed or implied, with regard to these    #\n",
    "# programs or to the documentation contained in these books. The authors #\n",
    "# and publisher shall not be liable in any event for incidental or       #\n",
    "# consequential damages in connection with, or arising out of, the       #\n",
    "# furnishing, performance, or use of these programs.                     #\n",
    "##########################################################################\n"
   ]
  }
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