Cyclic iterator

cyclic-iterator.ipynb

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   "source": [
    "class CyclicIterator:\n",
    "    def __init__(self, iterable):\n",
    "        self.iterable = iterable\n",
    "        self.iterator = iter(self.iterable)\n",
    "        \n",
    "    def __iter__(self):\n",
    "        return self\n",
    "    \n",
    "    def __next__(self):\n",
    "        try:\n",
    "            return next(self.iterator)\n",
    "        except StopIteration:\n",
    "            self.iterator =iter(self.iterable)\n",
    "            return next(self.iterator)"
   ]
  },
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   "metadata": {},
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     "text": [
      "a\n",
      "b\n",
      "c\n",
      "d\n",
      "e\n",
      "a\n",
      "b\n",
      "c\n"
     ]
    }
   ],
   "source": [
    "alphabet = CyclicIterator('abcde')\n",
    "for _ in range(8):\n",
    "    print(next(alphabet))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "a\n",
      "b\n",
      "c\n",
      "d\n",
      "e\n",
      "a\n",
      "b\n",
      "c\n"
     ]
    }
   ],
   "source": [
    "import itertools\n",
    "alphabet = itertools.cycle('abcde')\n",
    "for _ in range(8):\n",
    "    print(next(alphabet))"
   ]
  }
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