PythonRef_assign_varibles.ipynb

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    {
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     "output_type": "stream",
     "text": [
      "['Acetyl', 'Phospho']\n"
     ]
    }
   ],
   "source": [
    "modifications = None\n",
    "modifications = modifications or [\"Acetyl\",\"Phospho\"]\n",
    "print(modifications)"
   ]
  },
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    "collapsed": true
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