Add oj python stdin.

Author: EvanLi

OJ平台Python输入/Jupyter标准输入Stdin.ipynb

@@ -0,0 +1,117 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Jupyter标准输入sys.stdin\n",
+    "\n",
+    "https://www.reddit.com/r/Python/comments/24b3nv/programmatically_providing_input_to/\n",
+    "\n",
+    "**使用python io模块的StringIO将字符串替换成sys.stdin**\n",
+    "\n",
+    "You can change sys.stdin with any other file like object:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from io import StringIO  \n",
+    "import sys\n",
+    "\n",
+    "doc = '''3\n",
+    "1 2 3\n",
+    "4 5 6\n",
+    "7 8 9\n",
+    "'''\n",
+    "\n",
+    "sys.stdin = StringIO(doc)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "3\n",
+      "[1, 2, 3]\n",
+      "[4, 5, 6]\n",
+      "[7, 8, 9]\n"
+     ]
+    }
+   ],
+   "source": [
+    "n = int(sys.stdin.readline().strip())\n",
+    "print(n)\n",
+    "for i in range(n):\n",
+    "    line_str = sys.stdin.readline().strip()\n",
+    "    line = list(map(int,line_str.split()))\n",
+    "    print(line)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "3\n",
+      "7\n"
+     ]
+    }
+   ],
+   "source": [
+    "#coding=utf-8\n",
+    "\n",
+    "from io import StringIO  \n",
+    "import sys\n",
+    "\n",
+    "doc = '''1 2\n",
+    "3 4\n",
+    "'''\n",
+    "\n",
+    "sys.stdin = StringIO(doc)\n",
+    " \n",
+    "if __name__ == \"__main__\":\n",
+    "    while True:\n",
+    "        try:\n",
+    "            line = sys.stdin.readline().split()\n",
+    "            a,b = list(map(int,line))\n",
+    "            print(a+b)\n",
+    "        except:\n",
+    "            break"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "tf36",
+   "language": "python",
+   "name": "tf36"
+  },
+  "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
+}