--- a
+++ b/ipynb/split into folders.ipynb
@@ -0,0 +1,104 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import os\n",
+    "import shutil\n",
+    "src = \"/home/serge/database/data/genomes/bacillus/ncbi-genomes-2019-06-25/train/\"\n",
+    "t = \"/home/serge/database/data/genomes/bacillus/ncbi-genomes-2019-06-25\"\n",
+    "\n",
+    "src_files = os.listdir(src)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "3966"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "len(src_files)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "num=500\n",
+    "\n",
+    "for i, file_name in enumerate(src_files):\n",
+    "    if i % num == 0:\n",
+    "        dest = f\"{t}/{i}/\"\n",
+    "        if not os.path.exists(dest):\n",
+    "            os.mkdir(dest)\n",
+    "    full_file_name = os.path.join(src, file_name)\n",
+    "    if os.path.isfile(full_file_name):\n",
+    "        shutil.copy(full_file_name, dest)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from sklearn.model_selection import train_test_split\n",
+    "train, test = train_test_split(src_files,test_size=0.2, random_state=42)\n",
+    "portions = {\"train\":train, \"valid\":test}\n",
+    "\n",
+    "for part in portions.keys():\n",
+    "    for file_name in portions[part]:\n",
+    "        dest = f\"{t}/{part}\"\n",
+    "        if not os.path.exists(dest):\n",
+    "            os.mkdir(dest)\n",
+    "        full_file_name = os.path.join(src, file_name)\n",
+    "        if os.path.isfile(full_file_name):\n",
+    "            shutil.copy(full_file_name, dest)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python [conda env:bio] *",
+   "language": "python",
+   "name": "conda-env-bio-py"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.6.8"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}