删除 'day03/作业1.ipynb'

day03/作业1.ipynb

@@ -1,151 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "id": "5f6222af",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "array([37.2, 37.6, 36.8])"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "import numpy as np\n",
-    "\n",
-    "X = np.array([[1.2, 1.5, 1.8],\n",
-    "               [1.3, 1.4, 1.9],\n",
-    "               [1.1, 1.6, 1.7]])\n",
-    "y = np.array([5, 10, 9]).T\n",
-    "\n",
-    "\n",
-    "\n",
-    "\n",
-    "\n",
-    "X.dot(y)\n"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "id": "ffc6b9e4",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "array([ 5, 10,  9])"
-      ]
-     },
-     "execution_count": 2,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "y"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "id": "ed967d18",
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "(3, 3)"
-      ]
-     },
-     "execution_count": 3,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "X.shape"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
-   "id": "e8492831",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "832 ns ± 16.2 ns per loop (mean ± std. dev. of 7 runs, 1000000 loops each)\n"
-     ]
-    }
-   ],
-   "source": [
-    "%timeit X.dot(y)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 5,
-   "id": "282b4e76",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "16.9 µs ± 319 ns per loop (mean ± std. dev. of 7 runs, 100000 loops each)\n"
-     ]
-    }
-   ],
-   "source": [
-    "%%timeit\n",
-    "total = []\n",
-    "for i in range(X.shape[0]):\n",
-    "    each_price = 0\n",
-    "    for j in range(X.shape[1]):\n",
-    "        each_price += X[i,j] * y[j]\n",
-    "#         each_price = each_price + X[i,j] * y[j]\n",
-    "    total.append(round(each_price, 1))\n",
-    "total   "
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "053ee24f",
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
-   "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": "3.7.3"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 5
-}