{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## isodatetime"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import metomi.isodatetime.parsers as parse\n",
    "import metomi.isodatetime.dumpers as dump"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "date_time = parse.TimePointParser().parse('2000-01-01T00:00Z')\n",
    "date_time.month_of_year"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## cylc"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [],
   "source": [
    "from cylc.flow.cycling.iso8601 import ISO8601Point\n",
    "from cylc.flow.cycling.iso8601 import ISO8601Interval\n",
    "from cylc.flow.cycling import iso8601"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "20000101T1200+12\n"
     ]
    },
    {
     "ename": "ISO8601SyntaxError",
     "evalue": "Invalid ISO 8601 duration representation: 20000101T120012",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mKeyError\u001b[0m                                  Traceback (most recent call last)",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     77\u001b[0m         \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 78\u001b[0;31m             \u001b[0;32mreturn\u001b[0m \u001b[0minputs_results\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mKeyError\u001b[0m: ('20000101T1200+12', '20000101T1200+12')",
      "\nDuring handling of the above exception, another exception occurred:\n",
      "\u001b[0;31mKeyError\u001b[0m                                  Traceback (most recent call last)",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     77\u001b[0m         \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 78\u001b[0;31m             \u001b[0;32mreturn\u001b[0m \u001b[0minputs_results\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mKeyError\u001b[0m: ('20000101T1200+12',)",
      "\nDuring handling of the above exception, another exception occurred:\n",
      "\u001b[0;31mISO8601SyntaxError\u001b[0m                        Traceback (most recent call last)",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36minterval_parse\u001b[0;34m(interval_string)\u001b[0m\n\u001b[1;32m    863\u001b[0m     \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 864\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0m_interval_parse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minterval_string\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcopy\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    865\u001b[0m     \u001b[0;32mexcept\u001b[0m \u001b[0mException\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 80\u001b[0;31m             \u001b[0mresults\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfunction\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     81\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mlen\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minputs_results\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;34m>\u001b[0m \u001b[0mMEMOIZE_LIMIT\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_interval_parse\u001b[0;34m(interval_string)\u001b[0m\n\u001b[1;32m    886\u001b[0m     \u001b[0;34m\"\"\"Parse an interval_string into a proper Duration object.\"\"\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 887\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mSuiteSpecifics\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0minterval_parser\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mparse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minterval_string\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    888\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/notebooks/venv/lib/python3.7/site-packages/metomi/isodatetime/parsers.py\u001b[0m in \u001b[0;36mparse\u001b[0;34m(self, expression)\u001b[0m\n\u001b[1;32m    637\u001b[0m             \u001b[0;32mreturn\u001b[0m \u001b[0mdata\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mDuration\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m**\u001b[0m\u001b[0mresult_map\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 638\u001b[0;31m         \u001b[0;32mraise\u001b[0m \u001b[0mISO8601SyntaxError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"duration\"\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mexpression\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    639\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mISO8601SyntaxError\u001b[0m: Invalid ISO 8601 duration representation: 20000101T1200+12",
      "\nDuring handling of the above exception, another exception occurred:\n",
      "\u001b[0;31mKeyError\u001b[0m                                  Traceback (most recent call last)",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     77\u001b[0m         \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 78\u001b[0;31m             \u001b[0;32mreturn\u001b[0m \u001b[0minputs_results\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mKeyError\u001b[0m: ('20000101T1200+12',)",
      "\nDuring handling of the above exception, another exception occurred:\n",
      "\u001b[0;31mISO8601SyntaxError\u001b[0m                        Traceback (most recent call last)",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36minterval_parse\u001b[0;34m(interval_string)\u001b[0m\n\u001b[1;32m    867\u001b[0m             return -1 * _interval_parse(\n\u001b[0;32m--> 868\u001b[0;31m                 interval_string.replace(\"-\", \"\", 1)).copy()\n\u001b[0m\u001b[1;32m    869\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mException\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 80\u001b[0;31m             \u001b[0mresults\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfunction\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     81\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mlen\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minputs_results\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;34m>\u001b[0m \u001b[0mMEMOIZE_LIMIT\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_interval_parse\u001b[0;34m(interval_string)\u001b[0m\n\u001b[1;32m    886\u001b[0m     \u001b[0;34m\"\"\"Parse an interval_string into a proper Duration object.\"\"\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 887\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mSuiteSpecifics\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0minterval_parser\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mparse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minterval_string\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    888\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/notebooks/venv/lib/python3.7/site-packages/metomi/isodatetime/parsers.py\u001b[0m in \u001b[0;36mparse\u001b[0;34m(self, expression)\u001b[0m\n\u001b[1;32m    637\u001b[0m             \u001b[0;32mreturn\u001b[0m \u001b[0mdata\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mDuration\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m**\u001b[0m\u001b[0mresult_map\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 638\u001b[0;31m         \u001b[0;32mraise\u001b[0m \u001b[0mISO8601SyntaxError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"duration\"\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mexpression\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    639\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mISO8601SyntaxError\u001b[0m: Invalid ISO 8601 duration representation: 20000101T1200+12",
      "\nDuring handling of the above exception, another exception occurred:\n",
      "\u001b[0;31mKeyError\u001b[0m                                  Traceback (most recent call last)",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     77\u001b[0m         \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 78\u001b[0;31m             \u001b[0;32mreturn\u001b[0m \u001b[0minputs_results\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mKeyError\u001b[0m: ('20000101T120012',)",
      "\nDuring handling of the above exception, another exception occurred:\n",
      "\u001b[0;31mISO8601SyntaxError\u001b[0m                        Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-17-b2303eda35e5>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      6\u001b[0m \u001b[0mpoint2\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mISO8601Point\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfrom_nonstandard_string\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"20000101T000000Z\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 7\u001b[0;31m \u001b[0mpoint3\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mpoint\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0madd\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mpoint2\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      8\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      9\u001b[0m \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mpoint2\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36madd\u001b[0;34m(self, other)\u001b[0m\n\u001b[1;32m    103\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0madd\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mother\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    104\u001b[0m         \u001b[0;34m\"\"\"Add an Interval to self.\"\"\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 105\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mISO8601Point\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_iso_point_add\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mvalue\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mother\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mvalue\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    106\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    107\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0m__cmp__\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mother\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     78\u001b[0m             \u001b[0;32mreturn\u001b[0m \u001b[0minputs_results\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 80\u001b[0;31m             \u001b[0mresults\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfunction\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     81\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mlen\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minputs_results\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;34m>\u001b[0m \u001b[0mMEMOIZE_LIMIT\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     82\u001b[0m                 \u001b[0;31m# Full up, no more room.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_iso_point_add\u001b[0;34m(point_string, interval_string)\u001b[0m\n\u001b[1;32m    144\u001b[0m         \u001b[0;34m\"\"\"Add the parsed point_string to the parsed interval_string.\"\"\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    145\u001b[0m         \u001b[0mpoint\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mpoint_parse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mpoint_string\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 146\u001b[0;31m         \u001b[0minterval\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0minterval_parse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minterval_string\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    147\u001b[0m         \u001b[0;32mreturn\u001b[0m \u001b[0mstr\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mpoint\u001b[0m \u001b[0;34m+\u001b[0m \u001b[0minterval\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    148\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36minterval_parse\u001b[0;34m(interval_string)\u001b[0m\n\u001b[1;32m    869\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mException\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    870\u001b[0m             return _interval_parse(\n\u001b[0;32m--> 871\u001b[0;31m                 interval_string.replace(\"+\", \"\", 1)).copy()\n\u001b[0m\u001b[1;32m    872\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    873\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_wrapper\u001b[0;34m(*args)\u001b[0m\n\u001b[1;32m     78\u001b[0m             \u001b[0;32mreturn\u001b[0m \u001b[0minputs_results\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     79\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mKeyError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 80\u001b[0;31m             \u001b[0mresults\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfunction\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     81\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mlen\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minputs_results\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;34m>\u001b[0m \u001b[0mMEMOIZE_LIMIT\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     82\u001b[0m                 \u001b[0;31m# Full up, no more room.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/cylc-flow/cylc/flow/cycling/iso8601.py\u001b[0m in \u001b[0;36m_interval_parse\u001b[0;34m(interval_string)\u001b[0m\n\u001b[1;32m    885\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0m_interval_parse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minterval_string\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    886\u001b[0m     \u001b[0;34m\"\"\"Parse an interval_string into a proper Duration object.\"\"\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 887\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mSuiteSpecifics\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0minterval_parser\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mparse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minterval_string\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    888\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    889\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m~/Development/python/workspace/notebooks/venv/lib/python3.7/site-packages/metomi/isodatetime/parsers.py\u001b[0m in \u001b[0;36mparse\u001b[0;34m(self, expression)\u001b[0m\n\u001b[1;32m    636\u001b[0m                 \u001b[0mresult_map\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m\"seconds\"\u001b[0m\u001b[0;34m]\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mtimepoint\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msecond_of_minute\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    637\u001b[0m             \u001b[0;32mreturn\u001b[0m \u001b[0mdata\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mDuration\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m**\u001b[0m\u001b[0mresult_map\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 638\u001b[0;31m         \u001b[0;32mraise\u001b[0m \u001b[0mISO8601SyntaxError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"duration\"\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mexpression\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    639\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    640\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mISO8601SyntaxError\u001b[0m: Invalid ISO 8601 duration representation: 20000101T120012"
     ]
    }
   ],
   "source": [
    "iso8601.init()\n",
    "\n",
    "point = ISO8601Point.from_nonstandard_string(\"20000101T000000Z\")\n",
    "print(point)\n",
    "\n",
    "point2 = ISO8601Point.from_nonstandard_string(\"20000101T000000Z\")\n",
    "point3 = point.add(point2)\n",
    "\n",
    "print(point2)"
   ]
  }
 ],
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