feat: 新增技能扩展 N3 一章相关示例源码

code/newsletter/N3/functools.ipynb

@@ -0,0 +1,409 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# reduce"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[1, 2, 3, 4, 5]"
+      ]
+     },
+     "execution_count": 11,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "from functools import reduce\n",
+    "\n",
+    "numbers = list(range(1, 6))\n",
+    "numbers"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "15"
+      ]
+     },
+     "execution_count": 12,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "int(reduce(lambda x, y: x + y, numbers))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "120"
+      ]
+     },
+     "execution_count": 13,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "int(reduce(lambda x, y: x * y, numbers))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 21,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "15"
+      ]
+     },
+     "execution_count": 21,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "def accumulate(sequence):\n",
+    "    result = sequence[0]\n",
+    "    for index, _ in enumerate(sequence[1:], start=1):\n",
+    "        right = sequence[index]\n",
+    "        result += right\n",
+    "\n",
+    "    return result\n",
+    "\n",
+    "accumulate(numbers)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 22,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "25"
+      ]
+     },
+     "execution_count": 22,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "int(reduce(lambda x, y: x+y, numbers, 10))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# partial"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 36,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from functools import partial\n",
+    "from math import log\n",
+    "\n",
+    "def custom_log(x, base):\n",
+    "    return log(x, base)\n",
+    "\n",
+    "log2 = partial(custom_log, base=2)\n",
+    "log10 = partial(custom_log, base=10)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 38,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "2.0"
+      ]
+     },
+     "execution_count": 38,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "log2(4)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 39,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "2.0"
+      ]
+     },
+     "execution_count": 39,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "log10(100)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 40,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "2.0"
+      ]
+     },
+     "execution_count": 40,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "log2(9, base=3)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# wraps"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### without wraps function"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 42,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Monitoring request...\n",
+      "request https://sspai.com using GET method...\n"
+     ]
+    }
+   ],
+   "source": [
+    "def monitor(func):\n",
+    "    print(f\"Monitoring {func.__name__}...\")    \n",
+    "    def wrapper(*args, **kwargs):\n",
+    "        return func(*args, **kwargs)\n",
+    "    return wrapper\n",
+    "\n",
+    "@monitor\n",
+    "def request(url, method=\"GET\"):\n",
+    "    \"\"\"Request from target url\n",
+    "    :param url: string, the target url.\n",
+    "    :param method: string, the request method, default is GET.\n",
+    "    \"\"\"\n",
+    "    print(f\"request {url} using {method} method...\")\n",
+    "\n",
+    "request(\"https://sspai.com\")\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 46,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "<function __main__.monitor.<locals>.wrapper(*args, **kwargs)>"
+      ]
+     },
+     "execution_count": 46,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "request"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 47,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "wrapper\n",
+      "None\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(request.__name__)\n",
+    "print(request.__doc__)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### with wraps function"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 48,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Monitoring request...\n",
+      "request https://sspai.com using GET method...\n"
+     ]
+    }
+   ],
+   "source": [
+    "from functools import wraps\n",
+    "\n",
+    "def monitor(func):\n",
+    "    print(f\"Monitoring {func.__name__}...\")\n",
+    "\n",
+    "    @wraps(func)\n",
+    "    def wrapper(*args, **kwargs):\n",
+    "        return func(*args, **kwargs)\n",
+    "    return wrapper\n",
+    "\n",
+    "@monitor\n",
+    "def request(url, method=\"GET\"):\n",
+    "    \"\"\"Request from target url\n",
+    "    :param url: string, the target url.\n",
+    "    :param method: string, the request method, default is GET.\n",
+    "    \"\"\"\n",
+    "    print(f\"request {url} using {method} method...\")\n",
+    "\n",
+    "request(\"https://sspai.com\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 49,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "<function __main__.request(url, method='GET')>"
+      ]
+     },
+     "execution_count": 49,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "request"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 50,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "request\n",
+      "Request from target url\n",
+      "    :param url: string, the target url.\n",
+      "    :param method: string, the request method, default is GET.\n",
+      "    \n"
+     ]
+    }
+   ],
+   "source": [
+    "print(request.__name__)\n",
+    "print(request.__doc__)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3.9.0 ('pandas-startup')",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.0"
+  },
+  "orig_nbformat": 4,
+  "vscode": {
+   "interpreter": {
+    "hash": "13977d4cc82dee5f9d9535ceb495bd0ab12a43c33c664e5f0d53c24cf634b67f"
+   }
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}