delegate generator recursively

recursively-generate.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "from collections import Sequence\n",
    "\n",
    "def flatten(curr_item):\n",
    "    is_seq = isinstance(curr_item, Sequence)\n",
    "    is_single_str = isinstance(curr_item, str) and len(curr_item) == 1\n",
    "    if is_seq and not is_single_str:\n",
    "        for item in curr_item:\n",
    "            yield from flatten(item)\n",
    "    else:\n",
    "        yield curr_item        "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 'd', 'o', 'n', 'e']"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "gen = flatten([[[1, 2, 3], [4, 5]], [6, 7, 8], [9, [10, 'done']]])\n",
    "list(gen)"
   ]
  }
 ],
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