feat: 新增Vol09章节示例源码

This commit is contained in:
100gle
2022-05-25 22:38:18 +08:00
parent f95c7cdc23
commit 8db8588ef5

476
code/09/class.ipynb Normal file
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{
"cells": [
{
"cell_type": "markdown",
"source": [
"# 理性认识「类与对象」"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%% md\n"
}
}
},
{
"cell_type": "code",
"execution_count": 29,
"metadata": {
"collapsed": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"True\n"
]
}
],
"source": [
"class Human:\n",
" eyes = 2\n",
" hands = 2\n",
" legs = 2\n",
" has_hair = True\n",
"\n",
" def walk(self):\n",
" print(\"Walking\")\n",
"\n",
" def run(self):\n",
" print(\"Running\")\n",
"\n",
" def think(self):\n",
" print(\"Thinking\")\n",
"\n",
"\n",
"def is_human(obj):\n",
" if (\n",
" (hasattr(obj, \"eyes\") and getattr(obj, \"eyes\") == 2)\n",
" and (hasattr(obj, \"hands\") and getattr(obj, \"hands\") == 2)\n",
" and (hasattr(obj, \"legs\") and getattr(obj, \"legs\") == 2)\n",
" and (hasattr(obj, \"has_hair\") and getattr(obj, \"has_hair\") == True)\n",
" and hasattr(obj, \"walk\")\n",
" and hasattr(obj, \"run\")\n",
" and hasattr(obj, \"think\")\n",
" ):\n",
" return True\n",
" return False\n",
"\n",
"\n",
"obj = Human()\n",
"print(is_human(obj))"
]
},
{
"cell_type": "code",
"execution_count": 30,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"obj.eyes: 2\n"
]
}
],
"source": [
"print(f\"obj.eyes: {obj.eyes}\")"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 31,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"obj.hands: 2\n"
]
}
],
"source": [
"print(f\"obj.hands: {obj.hands}\")"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 32,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"obj.legs: 2\n"
]
}
],
"source": [
"print(f\"obj.legs: {obj.legs}\")"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 33,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"obj.has_hair: True\n"
]
}
],
"source": [
"print(f\"obj.has_hair: {obj.has_hair}\")"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 34,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Walking\n"
]
}
],
"source": [
"obj.walk()"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 35,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Running\n"
]
}
],
"source": [
"obj.run()"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 36,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Thinking\n"
]
}
],
"source": [
"obj.think()"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "markdown",
"source": [
"## 属性和方法"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%% md\n"
}
}
},
{
"cell_type": "code",
"execution_count": 37,
"outputs": [],
"source": [
"class MatrixFactory: # 1\n",
" name = \"Matrix\" # 2\n",
"\n",
" def echo(self): # 3\n",
" print(\"Welcome to the Matrix\")\n",
"\n",
"\n",
"matrix = MatrixFactory() # 4"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 38,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Matrix\n"
]
}
],
"source": [
"print(matrix.name) # 5"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 39,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Welcome to the Matrix\n"
]
}
],
"source": [
"matrix.echo() # 6"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "markdown",
"source": [
"## 构造"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%% md\n"
}
}
},
{
"cell_type": "code",
"execution_count": 40,
"outputs": [],
"source": [
"class Nation: # 1\n",
" def __init__(self, name=None): # 2\n",
" if not name:\n",
" self.name = \"China\"\n",
" else:\n",
" self.name = name\n"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 41,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"China\n"
]
}
],
"source": [
"china = Nation() # 3\n",
"print(china.name) # 4"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 42,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"USA\n"
]
}
],
"source": [
"usa = Nation(name=\"USA\") # 5\n",
"print(usa.name) # 6"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 43,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"robot address: 140602200206592\n",
"self address: 140602200206592\n"
]
}
],
"source": [
"\n",
"class Robot: # 1\n",
" def show_self(self): # 2\n",
" print(f\"self address: {id(self)}\")\n",
"\n",
"\n",
"robot = Robot() # 3\n",
"print(f\"robot address: {id(robot)}\") # 4\n",
"robot.show_self() # 5\n"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 44,
"outputs": [],
"source": [
"# error example\n",
"\n",
"# class Error: # 1\n",
"# def raise_error(): # 2\n",
"# print(\"error\")\n",
"#\n",
"#\n",
"# err = Error() # 3\n",
"# err.raise_error() # 4"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
},
{
"cell_type": "code",
"execution_count": 45,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"error\n"
]
}
],
"source": [
"class Error:\n",
" def raise_error(err): # 1\n",
" print(\"error\")\n",
"\n",
"\n",
"err = Error()\n",
"err.raise_error()"
],
"metadata": {
"collapsed": false,
"pycharm": {
"name": "#%%\n"
}
}
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 2
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython2",
"version": "2.7.6"
}
},
"nbformat": 4,
"nbformat_minor": 0
}