How to create TPOT individuals

tpot-individual-creation.ipynb

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   "source": [
    "Creating TPOT pipelines by hand is tricky, so I recommend using the following technique."
   ]
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      "text/plain": [
       "[<deap.gp.Primitive at 0x1139a5c28>, <deap.gp.Terminal at 0x1139a6a68>]"
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   "source": [
    "from tpot import TPOT\n",
    "\n",
    "# Create a TPOT object with a fixed random_state so it is reproducible\n",
    "my_tpot = TPOT(random_state=42)\n",
    "\n",
    "# Create a new TPOT individual\n",
    "individual = my_tpot._toolbox.individual()\n",
    "individual"
   ]
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      "text/plain": [
       "'_robust_scaler(ARG0)'"
      ]
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   "source": [
    "# String representation of that individual\n",
    "str(individual)"
   ]
  },
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   "cell_type": "code",
   "execution_count": 3,
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   "outputs": [
    {
     "data": {
      "text/plain": [
       "'_random_forest(_knnc(_random_forest(ARG0, 93), sub(13, 31)), add(add(68, 57), add(54, 23)))'"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Keep creating new TPOT individuals until a good test case is generated\n",
    "while 'random_forest' not in str(individual):\n",
    "    individual = my_tpot._toolbox.individual()\n",
    "\n",
    "str(individual)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
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   "outputs": [
    {
     "data": {
      "text/plain": [
       "'_binarizer(_random_forest(_polynomial_features(ARG0), add(15, 58)), _div(mul(27, 82), mul(76, 2)))'"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Another example\n",
    "while 'random_forest' not in str(individual) or 'polynomial_features' not in str(individual):\n",
    "    individual = my_tpot._toolbox.individual()\n",
    "\n",
    "str(individual)"
   ]
  },
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