nim cell magic

def_magic.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "from IPython.core.magic import (register_line_magic, register_cell_magic,\n",
    "                                register_line_cell_magic)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [],
   "source": [
    "@register_cell_magic\n",
    "def nim(line, cell):\n",
    "    import subprocess as sp\n",
    "    code = \"import nimpy\\n\\n\" + cell\n",
    "    print(code)\n",
    "    open(\"tmp.nim\", \"w\").write(code)\n",
    "    cmd = \"nim c --app:lib --out:mymod.so tmp.nim\"\n",
    "    cp = sp.run(cmd, shell=True, check=True)\n",
    "    print(cp)\n",
    "    if cp.returncode == 0:\n",
    "        print(\"Success!\")\n",
    "        import mymod"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "import nimpy\n",
      "\n",
      "proc greet(name: string): string {.exportpy.} =\n",
      "    return \"Hello, \" & name & \"!\"\n",
      "CompletedProcess(args='nim c --app:lib --out:mymod.so tmp.nim', returncode=0)\n",
      "Success!\n"
     ]
    },
    {
     "ename": "ImportError",
     "evalue": "dynamic module does not define module export function (PyInit_mymod)",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m------------------------------------------------------\u001b[0m",
      "\u001b[0;31mImportError\u001b[0m          Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-18-0cb0f0b187a1>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mget_ipython\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrun_cell_magic\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'nim'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m''\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m'proc greet(name: string): string {.exportpy.} =\\n    return \"Hello, \" & name & \"!\"'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m~/anaconda3/envs/chem/lib/python3.6/site-packages/IPython/core/interactiveshell.py\u001b[0m in \u001b[0;36mrun_cell_magic\u001b[0;34m(self, magic_name, line, cell)\u001b[0m\n\u001b[1;32m   2165\u001b[0m             \u001b[0mmagic_arg_s\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mvar_expand\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mline\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mstack_depth\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   2166\u001b[0m             \u001b[0;32mwith\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mbuiltin_trap\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m-> 2167\u001b[0;31m                 \u001b[0mresult\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfn\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mmagic_arg_s\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mcell\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m   2168\u001b[0m             \u001b[0;32mreturn\u001b[0m \u001b[0mresult\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   2169\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m<ipython-input-17-113220b24e15>\u001b[0m in \u001b[0;36mnim\u001b[0;34m(line, cell)\u001b[0m\n\u001b[1;32m     15\u001b[0m     \u001b[0;32mif\u001b[0m \u001b[0mcp\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mreturncode\u001b[0m \u001b[0;34m==\u001b[0m \u001b[0;36m0\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     16\u001b[0m         \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Success!\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 17\u001b[0;31m         \u001b[0;32mimport\u001b[0m \u001b[0mmymod\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mImportError\u001b[0m: dynamic module does not define module export function (PyInit_mymod)"
     ]
    }
   ],
   "source": [
    "%%nim\n",
    "proc greet(name: string): string {.exportpy.} =\n",
    "    return \"Hello, \" & name & \"!\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "ename": "ImportError",
     "evalue": "dynamic module does not define module export function (PyInit_mymod)",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m------------------------------------------------------\u001b[0m",
      "\u001b[0;31mImportError\u001b[0m          Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-8-205c5fda5852>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0;32mimport\u001b[0m \u001b[0mmymod\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mImportError\u001b[0m: dynamic module does not define module export function (PyInit_mymod)"
     ]
    }
   ],
   "source": [
    "import mymod"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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