有效沟通问答-【官方】百战程序员_IT在线教育培训机构

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		
		<link	rel="stylesheet"	type="text/css"	href="css/reset.css"/>
		<link	rel="stylesheet"	type="text/css"	href="css/jd.css"/>
		<link	rel="stylesheet"	type="text/css"	href="icon/iconfont.css"/>
		
		<!--引入JS文件-->
		<script type="text/javascript" src="js/jd.js"></script>
		
	</head>
	<body>
		
		<!--导航开始-->
			
			<div	class="nav">
				
				<div	class="warp">
					<ul	class="nav_ul1">
						<li><a href=""><i class="iconfont">&#xe620;</i>京东首页</a></li>
						<li><a href="">配送到：北京</a></li>
					</ul>
					
					<ul>
						
						<ul	class="nav_ul2">
							<li><a href="">洋洋宝贝</a><span>|</span></li>
							<li><a href="">我的订单</a><span>|</span></li>
							<li><a href="">我的京东</a><span>|</span></li>
							<li><a href="">京东会员</a><span>|</span></li>
							<li><a href="">企业采购</a><span>|</span></li>
							<li><a href="">京东手机</a><span>|</span></li>
							<li><a href="">关注京东</a><span>|</span></li>
							<li><a href="">客户服务</a><span>|</span></li>
							<li><a href="">网站导航</a></li>
						</ul>
						
					</ul>
					
				</div>
				
			</div>
		
			
		
		<!--导航结束-->
		
		<!--搜索框开始-->
		
		<div	class="search"> 
			
			<div	class="warp">
				
				<img	src="img/logo.jpg"/>
					
				<div	class="search_div">
					
					<input type="text" class="search_text"/>
					<input type="button"	value="搜索" class="search_but"/>
					
				</div>
				
				
			</div>
			
		</div>
		
		<!--搜索框结束-->
		
		<!--标题开始-->
		<div	class="title warp">
			
			<h3>全部商品</h3>
			
			<div>
				<span>配送到</span>
				
				<select>
					
					<option>昌平区</option>
					<option>朝阳区</option>
					<option>海定区</option>
					<option>顺义区</option>
					<option>大兴区</option>
					
				</select>
			</div>
			
			
		</div>
		<!--标题结束-->
		
		<!--显示菜单的开始-->
		
		<div  class="tips warp">
			<ul>
				<li>
					<input type="checkbox" name="fav" id="all" onclick="checkTest1(this)"/>
					全选
				</li>
				<li>商品</li>
				<li>单价</li>
				<li>数量</li>
				<li>小计</li>
				<li>操作</li>
			</ul>
		</div>
		
		<!--显示菜单的结束-->
		
			
		<!--商品详情展示开始-->
		
		<div class="info warp"> 
				<ul>
					<li class="info_1"><input type="checkbox" name="fav" onclick="checkTest2()"/></li>
					<li class="info_2"><img src="img/img1.jpg" width="80px"/></li>
					<li class="info_3"><a>【京东超市】desha春秋季儿童休闲服</a></li>
					<li class="info_4"><a>颜色：灰色+粉红</a></li>
					<li class="info_5">￥182.5</li>
					<li class="info_6">
						
						<button>-</button>
						<input type="text" name="" id="" value="1" />
						<button class="info_bot">+</button>
					</li>
					<li class="info_7">￥182.5</li>
					<li>
						<a>删除</a><br />
						<a>移到我的关注</a>
					</li>
				</ul>
			</div>
			
			<div class="info warp"> 
				<ul>
					<li class="info_1"><input type="checkbox" name="fav" onclick="checkTest2()"/></li>
					<li class="info_2"><img src="img/img3.jpg" width="80px"/></li>
					<li class="info_3"><a>【京东超市】desha春秋季儿童休闲服</a></li>
					<li class="info_4"><a>颜色：灰色+粉红</a></li>
					<li class="info_5">￥182.5</li>
					<li class="info_6">
						
						<button>-</button>
						<input type="text" name="fav" id="" value="1" />
						<button class="info_bot">+</button>
					</li>
					<li class="info_7">￥182.5</li>
					<li>
						<a>删除</a><br />
						<a>移到我的关注</a>
					</li>
				</ul>
			</div>
			
			<div class="info warp"> 
				<ul>
					<li class="info_1"><input type="checkbox" name="fav" onclick="checkTest2()"/></li>
					<li class="info_2"><img src="img/img2.jpg" width="80px"/></li>
					<li class="info_3"><a>【京东超市】desha春秋季儿童休闲服</a></li>
					<li class="info_4"><a>颜色：灰色+粉红</a></li>
					<li class="info_5">￥182.5</li>
					<li class="info_6">
						
						<button>-</button>
						<input type="text" name="" id="" value="1" />
						<button class="info_bot">+</button>
					</li>
					<li class="info_7">￥182.5</li>
					<li>
						<a>删除</a><br />
						<a>移到我的关注</a>
					</li>
				</ul>
			</div>
			
		
		<!--商品详情展示结束-->
		
		<!--结算模块开始-->
		<div class="balance warp">
			<ul class="balance_ul1">
				<li>
					<input type="checkbox" name="fav" id="" value="" onclick="checkTest1(this)" />
					全选
				</li>
				<li><a>删除选中商品</a></li>
				<li><a>移到我的关注</a></li>
				<li><a>清除下柜商品</a></li>
			</ul>
			
			<ul class="balance_ul2">
				<li>已选择<span>1</span>件商品</li>
				<li>总价  <span>￥12</span></li>
				<li>
					
					<button class="butt">去结算</button>
					
				</li>
			</ul>
			
		</div>
		<!--结算模块结束-->
		
	</body>
</html>

JS部分：



//获得所有name=fav的多选框对象		定义成全局变量
var fav = document.getElementsByName("fav");
	

//判断是否全选操作
function checkTest1(th){
	
	var flag = th.checked;//判断所选中对象有没有被勾选
	
	for(var i in fav){
			
			fav[i].checked = flag;
		}
	
}

//单选决定全选的操作
function checkTest2(){
	
	var flag = true;
	
//去掉第一个和最后一个多选框（全选框），当其他多选框都选中之后才触发全选框被勾选
	for(var i=1;i<fav.length-1;i++){//注意循环的开始和结束
		
		if(!fav[i].checked){
			
			flag = false;
			
			break;//但凡有一个多选框没被选中剩下的就可以不用判断了，跳出循环
		}
		
		
	}
	
	//根据flag的值决定全选框是否被勾选
	
	fav[0].checked = flag;//下标为0对应的是第一个全选框
	
	fav[fav.length-1].checked = flag;//下标为length-1对应的是最后一个全选框
	
	console.log(fav[0].checked);
	console.log(fav[fav.length-1].checked);
	
}

JAVA 全系列/第四阶段：网页编程和设计/Javascript 语言（旧） 31276楼

动图如下：

GIF.gif

源码如下：

html部分：

<!DOCTYPE html>

<html>

<head>

</head>

<body>

</ul>

<ul>

</ul>

</div>

</div>

<div>

</select>

</div>

<ul>

<li>

全选

</li>

</ul>

</div>

<ul>

<li class="info_3"><a>【京东超市】desha春秋季儿童休闲服</a></li>

</li>

<li>

<a>移到我的关注</a>

</li>

</ul>

</div>

<ul>

<li class="info_3"><a>【京东超市】desha春秋季儿童休闲服</a></li>

</li>

<li>

<a>移到我的关注</a>

</li>

</ul>

</div>

<ul>

<li class="info_3"><a>【京东超市】desha春秋季儿童休闲服</a></li>

</li>

<li>

<a>移到我的关注</a>

</li>

</ul>

</div>

<li>

全选

</li>

<li><a>删除选中商品</a></li>

<li><a>移到我的关注</a></li>

<li><a>清除下柜商品</a></li>

</ul>

<li>

</li>

</ul>

</div>

</body>

</html>

JS部分：

//获得所有name=fav的多选框对象定义成全局变量

var fav = document.getElementsByName("fav");

//判断是否全选操作

function checkTest1(th){

var flag = th.checked;//判断所选中对象有没有被勾选

for(var i in fav){

fav[i].checked = flag;

}

//单选决定全选的操作

function checkTest2(){

var flag = true;

//去掉第一个和最后一个多选框（全选框），当其他多选框都选中之后才触发全选框被勾选

for(var i=1;i<fav.length-1;i++){//注意循环的开始和结束

if(!fav[i].checked){

flag = false;

break;//但凡有一个多选框没被选中剩下的就可以不用判断了，跳出循环

}

//根据flag的值决定全选框是否被勾选

fav[0].checked = flag;//下标为0对应的是第一个全选框

fav[fav.length-1].checked = flag;//下标为length-1对应的是最后一个全选框

}

JAVA 全系列/第四阶段：网页编程和设计/Javascript 语言（旧） 31277楼

这里的Chinese c = (Chinese)a1，这是个向下转型，我可不可以理解为a1将指向堆的地址传递给c，然后c.xiuxi()就可调用堆里面的xiuxi()方法

JAVA 全系列/第一阶段：JAVA 快速入门/面向对象详解和JVM底层内存分析 31278楼

老师好，为啥我这么写路径，一直报错找不到web.xml这个文件呢，我的是macOS系统，这个路径格式和系统有关系吗？我尝试了无数次了都不行，急。。

JAVA 全系列/第二阶段：JAVA 基础深化和提高/手写服务器项目（旧） 31279楼

我这个结果是这样为什么呀？

JAVA 全系列/第一阶段：JAVA 快速入门/数组和数据存储 31280楼

对封装的问题：

如果想限制别人访问本类，为什么不能把类的修饰符public改成private，不是更方便吗？

为什么非要在属性和方式前面用private呢？

JAVA 全系列/第一阶段：JAVA 快速入门/面向对象详解和JVM底层内存分析 31281楼

老师，请问这个租房网项目更新完了吗？

JAVA 全系列/第二十阶段：租房网（Spring Cloud最新架构）/Livegoods第一天 31282楼

老师之前不是说在web-inf下的文件要访问只能请求转发吗为什么这次用了重定向做跳转

JAVA 全系列/第六阶段：项目管理与SSM框架/RBAC实战 31283楼

from threading import Thread
from queue import   Queue
from time import sleep


def producer():
    num = 1
    while True:
        # if mq.qsize() < 10:
        print(f"生产了{num}号加菲猫")
        mq.put(f"{num}号加菲猫")
        num += 1
        sleep(1)

def consumer():
    #while True:
    print("购买了{}".format(mq.get()))
    sleep(2)

if __name__ == "__main__":
    # 创建共享数据的容器
    mq = Queue(maxsize=10)
    # 创建生产者线程
    t1 = Thread(target=producer)
    # 创建消费者线程
    t2 = Thread(target=consumer)
    t3 = Thread(target=consumer)
    # 开始工作
    t1.start()
    t2.start()
    t3.start()

老师，queue队列里的数据是不是 get（）之后就消失了

Python 全系列/第三阶段：Python 网络与并发编程/并发编程 31284楼

test14_celery_study.7z

(django_env) E:\百战卓越程序员培训之Python\第十阶段Python_Django2框架\个人练习\章节2个人练习\test14_celery_study>flower -A test14_celery_study --port=5555

[I 200710 12:47:12 command:138] Visit me at http://localhost:5555

[I 200710 12:47:12 command:145] Broker: redis://127.0.0.1:6379/0

[I 200710 12:47:12 command:146] Registered tasks:

['celery.accumulate',

'celery.backend_cleanup',

'celery.chain',

'celery.chord',

'celery.chord_unlock',

'celery.chunks',

'celery.group',

'celery.map',

'celery.starmap',

'celery_app.tasks.MyHookTask',

'celery_app.tasks.add',

'celery_app.tasks.first_group',

'celery_app.tasks.mul',

'celery_app.tasks.xsum']

[I 200710 12:47:12 mixins:229] Connected to redis://127.0.0.1:6379/0

flower -> flower:0.9.5 tornado:6.0.4 humanize:2.5.0

software -> celery:4.4.6 (cliffs) kombu:4.6.11 py:3.8.3

billiard:3.6.3.0 redis:3.5.3

platform -> system:Windows arch:32bit, WindowsPE

kernel version:10 imp:CPython

loader -> celery.loaders.app.AppLoader

settings -> transport:redis results:redis://127.0.0.1:6379/0

ABSOLUTE_URL_OVERRIDES: {

}

ADMINS: []

ALLOWED_HOSTS: []

APPEND_SLASH: True

AUTHENTICATION_BACKENDS: ['django.contrib.auth.backends.ModelBackend']

AUTH_PASSWORD_VALIDATORS: '********'

AUTH_USER_MODEL: 'auth.User'

BASE_DIR: 'E:\\百战卓越程序员培训之Python\\第十阶段Python_Django2框架\\个人练习\\章节2个人练习\\test14_celery_study'

BROKER_URL: 'redis://127.0.0.1:6379/0'

CACHES: {

'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'}}

CACHE_MIDDLEWARE_ALIAS: 'default'

CACHE_MIDDLEWARE_KEY_PREFIX: '********'

CACHE_MIDDLEWARE_SECONDS: 600

CELERYBEAT_SCHEDULE: {

'mul_every_30_seconds': { 'args': (14, 5),

'schedule': 5,

'task': 'celery_app.tasks.mul'}}

CELERY_RESULT_BACKEND: 'redis://127.0.0.1:6379/0'

CELERY_RESULT_SERIALIZER: 'json'

CELERY_TASK_RESULT_EXPIRES: 86400

CELERY_TIMAZONE: 'Asia/Shanghai'

CSRF_COOKIE_AGE: 31449600

CSRF_COOKIE_DOMAIN: None

CSRF_COOKIE_HTTPONLY: False

CSRF_COOKIE_NAME: 'csrftoken'

CSRF_COOKIE_PATH: '/'

CSRF_COOKIE_SAMESITE: 'Lax'

CSRF_COOKIE_SECURE: False

CSRF_FAILURE_VIEW: 'django.views.csrf.csrf_failure'

CSRF_HEADER_NAME: 'HTTP_X_CSRFTOKEN'

CSRF_TRUSTED_ORIGINS: []

CSRF_USE_SESSIONS: False

DATABASES: {

'default': { 'ATOMIC_REQUESTS': False,

'AUTOCOMMIT': True,

'CONN_MAX_AGE': 0,

'ENGINE': 'django.db.backends.sqlite3',

'HOST': '',

'NAME': 'E:\\百战卓越程序员培训之Python\\第十阶段Python_Django2框架\\个人练习\\章节2个人练习\\test14_celery_study\\db.sqlite3',

'OPTIONS': {},

'PASSWORD': '********',

'PORT': '',

'TEST': { 'CHARSET': None,

'COLLATION': None,

'MIRROR': None,

'NAME': None},

'TIME_ZONE': None,

'USER': ''}}

DATABASE_ROUTERS: '********'

DATA_UPLOAD_MAX_MEMORY_SIZE: 2621440

DATA_UPLOAD_MAX_NUMBER_FIELDS: 1000

DATETIME_FORMAT: 'N j, Y, P'

DATETIME_INPUT_FORMATS: ['%Y-%m-%d %H:%M:%S',

'%Y-%m-%d %H:%M:%S.%f',

'%Y-%m-%d %H:%M',

'%Y-%m-%d',

'%m/%d/%Y %H:%M:%S',

'%m/%d/%Y %H:%M:%S.%f',

'%m/%d/%Y %H:%M',

'%m/%d/%Y',

'%m/%d/%y %H:%M:%S',

'%m/%d/%y %H:%M:%S.%f',

'%m/%d/%y %H:%M',

'%m/%d/%y']

DATE_FORMAT: 'N j, Y'

DATE_INPUT_FORMATS: ['%Y-%m-%d',

'%m/%d/%Y',

'%m/%d/%y',

'%b %d %Y',

'%b %d, %Y',

'%d %b %Y',

'%d %b, %Y',

'%B %d %Y',

'%B %d, %Y',

'%d %B %Y',

'%d %B, %Y']

DEBUG: True

DEBUG_PROPAGATE_EXCEPTIONS: False

DECIMAL_SEPARATOR: '.'

DEFAULT_CHARSET: 'utf-8'

DEFAULT_EXCEPTION_REPORTER_FILTER: 'django.views.debug.SafeExceptionReporterFilter'

DEFAULT_FILE_STORAGE: 'django.core.files.storage.FileSystemStorage'

DEFAULT_FROM_EMAIL: 'webmaster@localhost'

DEFAULT_INDEX_TABLESPACE: ''

DEFAULT_TABLESPACE: ''

DISALLOWED_USER_AGENTS: []

EMAIL_BACKEND: 'django.core.mail.backends.smtp.EmailBackend'

EMAIL_HOST: 'localhost'

EMAIL_HOST_PASSWORD: '********'

EMAIL_HOST_USER: ''

EMAIL_PORT: 25

EMAIL_SSL_CERTFILE: None

EMAIL_SSL_KEYFILE: '********'

EMAIL_SUBJECT_PREFIX: '[Django] '

EMAIL_TIMEOUT: None

EMAIL_USE_LOCALTIME: False

EMAIL_USE_SSL: False

EMAIL_USE_TLS: False

FILE_CHARSET: 'utf-8'

FILE_UPLOAD_DIRECTORY_PERMISSIONS: None

FILE_UPLOAD_HANDLERS: ['django.core.files.uploadhandler.MemoryFileUploadHandler',

'django.core.files.uploadhandler.TemporaryFileUploadHandler']

FILE_UPLOAD_MAX_MEMORY_SIZE: 2621440

FILE_UPLOAD_PERMISSIONS: 420

FILE_UPLOAD_TEMP_DIR: None

FIRST_DAY_OF_WEEK: 0

FIXTURE_DIRS: []

FORCE_SCRIPT_NAME: None

FORMAT_MODULE_PATH: None

FORM_RENDERER: 'django.forms.renderers.DjangoTemplates'

IGNORABLE_404_URLS: []

INSTALLED_APPS: ['django.contrib.admin',

'django.contrib.auth',

'django.contrib.contenttypes',

'django.contrib.sessions',

'django.contrib.messages',

'django.contrib.staticfiles',

'celery_app.apps.CeleryAppConfig']

INTERNAL_IPS: []

LANGUAGES: [('af', 'Afrikaans'),

('ar', 'Arabic'),

('ast', 'Asturian'),

('az', 'Azerbaijani'),

('bg', 'Bulgarian'),

('be', 'Belarusian'),

('bn', 'Bengali'),

('br', 'Breton'),

('bs', 'Bosnian'),

('ca', 'Catalan'),

('cs', 'Czech'),

('cy', 'Welsh'),

('da', 'Danish'),

('de', 'German'),

('dsb', 'Lower Sorbian'),

('el', 'Greek'),

('en', 'English'),

('en-au', 'Australian English'),

('en-gb', 'British English'),

('eo', 'Esperanto'),

('es', 'Spanish'),

('es-ar', 'Argentinian Spanish'),

('es-co', 'Colombian Spanish'),

('es-mx', 'Mexican Spanish'),

('es-ni', 'Nicaraguan Spanish'),

('es-ve', 'Venezuelan Spanish'),

('et', 'Estonian'),

('eu', 'Basque'),

('fa', 'Persian'),

('fi', 'Finnish'),

('fr', 'French'),

('fy', 'Frisian'),

('ga', 'Irish'),

('gd', 'Scottish Gaelic'),

('gl', 'Galician'),

('he', 'Hebrew'),

('hi', 'Hindi'),

('hr', 'Croatian'),

('hsb', 'Upper Sorbian'),

('hu', 'Hungarian'),

('hy', 'Armenian'),

('ia', 'Interlingua'),

('id', 'Indonesian'),

('io', 'Ido'),

('is', 'Icelandic'),

('it', 'Italian'),

('ja', 'Japanese'),

('ka', 'Georgian'),

('kab', 'Kabyle'),

('kk', 'Kazakh'),

('km', 'Khmer'),

('kn', 'Kannada'),

('ko', 'Korean'),

('lb', 'Luxembourgish'),

('lt', 'Lithuanian'),

('lv', 'Latvian'),

('mk', 'Macedonian'),

('ml', 'Malayalam'),

('mn', 'Mongolian'),

('mr', 'Marathi'),

('my', 'Burmese'),

('nb', 'Norwegian Bokmål'),

('ne', 'Nepali'),

('nl', 'Dutch'),

('nn', 'Norwegian Nynorsk'),

('os', 'Ossetic'),

('pa', 'Punjabi'),

('pl', 'Polish'),

('pt', 'Portuguese'),

('pt-br', 'Brazilian Portuguese'),

('ro', 'Romanian'),

('ru', 'Russian'),

('sk', 'Slovak'),

('sl', 'Slovenian'),

('sq', 'Albanian'),

('sr', 'Serbian'),

('sr-latn', 'Serbian Latin'),

('sv', 'Swedish'),

('sw', 'Swahili'),

('ta', 'Tamil'),

('te', 'Telugu'),

('th', 'Thai'),

('tr', 'Turkish'),

('tt', 'Tatar'),

('udm', 'Udmurt'),

('uk', 'Ukrainian'),

('ur', 'Urdu'),

('uz', 'Uzbek'),

('vi', 'Vietnamese'),

('zh-hans', 'Simplified Chinese'),

('zh-hant', 'Traditional Chinese')]

LANGUAGES_BIDI: ['he', 'ar', 'fa', 'ur']

LANGUAGE_CODE: 'en-us'

LANGUAGE_COOKIE_AGE: None

LANGUAGE_COOKIE_DOMAIN: None

LANGUAGE_COOKIE_HTTPONLY: False

LANGUAGE_COOKIE_NAME: 'django_language'

LANGUAGE_COOKIE_PATH: '/'

LANGUAGE_COOKIE_SAMESITE: None

LANGUAGE_COOKIE_SECURE: False

LOCALE_PATHS: []

LOGGING: {

}

LOGGING_CONFIG: 'logging.config.dictConfig'

LOGIN_REDIRECT_URL: '/accounts/profile/'

LOGIN_URL: '/accounts/login/'

LOGOUT_REDIRECT_URL: None

MANAGERS: []

MEDIA_ROOT: ''

MEDIA_URL: ''

MESSAGE_STORAGE: 'django.contrib.messages.storage.fallback.FallbackStorage'

MIDDLEWARE: ['django.middleware.security.SecurityMiddleware',

'django.contrib.sessions.middleware.SessionMiddleware',

'django.middleware.common.CommonMiddleware',

'django.middleware.csrf.CsrfViewMiddleware',

'django.contrib.auth.middleware.AuthenticationMiddleware',

'django.contrib.messages.middleware.MessageMiddleware',

'django.middleware.clickjacking.XFrameOptionsMiddleware']

MIGRATION_MODULES: {

}

MONTH_DAY_FORMAT: 'F j'

NUMBER_GROUPING: 0

PASSWORD_HASHERS: '********'

PASSWORD_RESET_TIMEOUT_DAYS: '********'

PREPEND_WWW: False

ROOT_URLCONF: 'test14_celery_study.urls'

SECRET_KEY: '********'

SECURE_BROWSER_XSS_FILTER: False

SECURE_CONTENT_TYPE_NOSNIFF: True

SECURE_HSTS_INCLUDE_SUBDOMAINS: False

SECURE_HSTS_PRELOAD: False

SECURE_HSTS_SECONDS: 0

SECURE_PROXY_SSL_HEADER: None

SECURE_REDIRECT_EXEMPT: []

SECURE_REFERRER_POLICY: None

SECURE_SSL_HOST: None

SECURE_SSL_REDIRECT: False

SERVER_EMAIL: 'root@localhost'

SESSION_CACHE_ALIAS: 'default'

SESSION_COOKIE_AGE: 1209600

SESSION_COOKIE_DOMAIN: None

SESSION_COOKIE_HTTPONLY: True

SESSION_COOKIE_NAME: 'sessionid'

SESSION_COOKIE_PATH: '/'

SESSION_COOKIE_SAMESITE: 'Lax'

SESSION_COOKIE_SECURE: False

SESSION_ENGINE: 'django.contrib.sessions.backends.db'

SESSION_EXPIRE_AT_BROWSER_CLOSE: False

SESSION_FILE_PATH: None

SESSION_SAVE_EVERY_REQUEST: False

SESSION_SERIALIZER: 'django.contrib.sessions.serializers.JSONSerializer'

SETTINGS_MODULE: 'test14_celery_study.settings'

SHORT_DATETIME_FORMAT: 'm/d/Y P'

SHORT_DATE_FORMAT: 'm/d/Y'

SIGNING_BACKEND: 'django.core.signing.TimestampSigner'

SILENCED_SYSTEM_CHECKS: []

STATICFILES_DIRS: []

STATICFILES_FINDERS: ['django.contrib.staticfiles.finders.FileSystemFinder',

'django.contrib.staticfiles.finders.AppDirectoriesFinder']

STATICFILES_STORAGE: 'django.contrib.staticfiles.storage.StaticFilesStorage'

STATIC_ROOT: None

STATIC_URL: '/static/'

TEMPLATES: [{'APP_DIRS': True,

'BACKEND': 'django.template.backends.django.DjangoTemplates',

'DIRS': ['E:\\百战卓越程序员培训之Python\\第十阶段Python_Django2框架\\个人练习\\章节2个人练习\\test14_celery_study\\templates'],

'OPTIONS': {'context_processors': ['django.template.context_processors.debug',

'django.template.context_processors.request',

'django.contrib.auth.context_processors.auth',

'django.contrib.messages.context_processors.messages']}}]

TEST_NON_SERIALIZED_APPS: []

TEST_RUNNER: 'django.test.runner.DiscoverRunner'

THOUSAND_SEPARATOR: ','

TIME_FORMAT: 'P'

TIME_INPUT_FORMATS: ['%H:%M:%S', '%H:%M:%S.%f', '%H:%M']

TIME_ZONE: 'UTC'

USE_I18N: True

USE_L10N: True

USE_THOUSAND_SEPARATOR: False

USE_TZ: True

USE_X_FORWARDED_HOST: False

USE_X_FORWARDED_PORT: False

WSGI_APPLICATION: 'test14_celery_study.wsgi.application'

X_FRAME_OPTIONS: 'DENY'

YEAR_MONTH_FORMAT: 'F Y'

is_overridden: <bound method Settings.is_overridden of <Settings "test14_celery_study.settings">>

Traceback (most recent call last):

File "c:\users\23242\appdata\local\programs\python\python38-32\lib\runpy.py", line 194, in _run_module_as_main

return _run_code(code, main_globals, None,

File "c:\users\23242\appdata\local\programs\python\python38-32\lib\runpy.py", line 87, in _run_code

exec(code, run_globals)

File "C:\Users\23242\Envs\django_env\Scripts\flower.exe\__main__.py", line 7, in <module>

File "c:\users\23242\envs\django_env\lib\site-packages\flower\__main__.py", line 11, in main

flower.execute_from_commandline()

File "c:\users\23242\envs\django_env\lib\site-packages\celery\bin\base.py", line 305, in execute_from_commandline

return self.handle_argv(self.prog_name, argv[1:])

File "c:\users\23242\envs\django_env\lib\site-packages\flower\command.py", line 56, in handle_argv

return self.run_from_argv(prog_name, argv)

File "c:\users\23242\envs\django_env\lib\site-packages\flower\command.py", line 51, in run_from_argv

flower.start()

File "c:\users\23242\envs\django_env\lib\site-packages\flower\app.py", line 60, in start

self.listen(self.options.port, address=self.options.address,

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\web.py", line 2116, in listen

server.listen(port, address)

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\tcpserver.py", line 152, in listen

self.add_sockets(sockets)

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\tcpserver.py", line 165, in add_sockets

self._handlers[sock.fileno()] = add_accept_handler(

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\netutil.py", line 279, in add_accept_handler

io_loop.add_handler(sock, accept_handler, IOLoop.READ)

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\platform\asyncio.py", line 100, in add_handler

self.asyncio_loop.add_reader(fd, self._handle_events, fd, IOLoop.READ)

File "c:\users\23242\appdata\local\programs\python\python38-32\lib\asyncio\events.py", line 501, in add_reader

raise NotImplementedError

NotImplementedError

Python 全系列/第十二阶段：Python_Django3框架/Django进阶 31285楼

老师，为啥我画横线那块不能像注释里那样写，提示不对

from threading import Thread
from queue import   Queue
from time import sleep


def producer():
    num = 1
    while True:
        print(f"生产了{num}号加菲猫")
        my.put(f"{num}号加菲猫")

def consumer():
    while True:
        print(f"购买了{mq.get()}")
        print("购买了{}".format(mq.get()))

if __name__ == "__main__":
    # 创建共享数据的容器
    mq = Queue()
    # 创建生产者线程
    t1 = Thread(target=producer)
    # 创建消费者线程
    t2 = Thread(target=consumer)
    # 开始工作
    t1.start()
    t2.start()

Python 全系列/第三阶段：Python 网络与并发编程/并发编程 31286楼

老师，没有学过vue，有vue.js的学习资料吗？

JAVA 全系列/（旧的隐藏）第二十一阶段：百战商城项目(Spring Cloud最新架构)/百战商城项目 31287楼

老师您好，网上说的是由于 python3.8 asyncio 在 windows 上默认使用 ProactorEventLoop 造成的，而不是之前的 SelectorEventLoop。jupyter 依赖 tornado，而 tornado 在 window 上需要使用 SelectorEventLoop，所以产生这个报错.，要添加代码，但是他说的我还不是很明白，链接：https://bbs.huaweicloud.com/blogs/140153

另外有一篇帖子上也有说明，但是我照着做，没有解决问题。链接：https://blog.csdn.net/agent_bin/article/details/103082046

附：我安装的软件包如下：

(django_env) E:\百战卓越程序员培训之Python\第十阶段Python_Django2框架\个人练习\章节2个人练习\test14_celery_study>pip list

Package Version

---------------------- -------

amqp 2.6.0

appdirs 1.4.4

asgiref 3.2.10

billiard 3.6.3.0

celery 4.4.6

celery-stubs 0.1.1

concurrent-log-handler 0.9.16

distlib 0.3.0

Django 3.0.7

django-redis 4.12.1

dnspython 1.16.0

eventlet 0.25.2

filelock 3.0.12

flower 0.9.5

future 0.18.2

greenlet 0.4.16

humanize 2.5.0

kombu 4.6.11

monotonic 1.5

mysqlclient 1.4.6

Pillow 7.2.0

pip 20.1.1

portalocker 1.7.0

prometheus-client 0.8.0

pytz 2020.1

pywin32 228

redis 3.5.3

setuptools 47.3.1

six 1.15.0

sqlparse 0.3.1

tornado 6.0.4

vine 1.3.0

virtualenv 20.0.24

virtualenvwrapper-win 1.2.6

wheel 0.34.2

Python 全系列/第十二阶段：Python_Django3框架/Django进阶 31288楼

老师好，我在项目根目录下执行如下命令：

(django_env) E:\百战卓越程序员培训之Python\第十阶段Python_Django2框架\个人练习\章节2个人练习\test14_celery_study>flower -A test14_celery_study --port=5555

结果抛出如下异常：

Traceback (most recent call last):

File "c:\users\23242\appdata\local\programs\python\python38-32\lib\runpy.py", line 194, in _run_module_as_main

return _run_code(code, main_globals, None,

File "c:\users\23242\appdata\local\programs\python\python38-32\lib\runpy.py", line 87, in _run_code

exec(code, run_globals)

File "C:\Users\23242\Envs\django_env\Scripts\flower.exe\__main__.py", line 7, in <module>

File "c:\users\23242\envs\django_env\lib\site-packages\flower\__main__.py", line 11, in main

flower.execute_from_commandline()

File "c:\users\23242\envs\django_env\lib\site-packages\celery\bin\base.py", line 305, in execute_from_commandline

return self.handle_argv(self.prog_name, argv[1:])

File "c:\users\23242\envs\django_env\lib\site-packages\flower\command.py", line 56, in handle_argv

return self.run_from_argv(prog_name, argv)

File "c:\users\23242\envs\django_env\lib\site-packages\flower\command.py", line 51, in run_from_argv

flower.start()

File "c:\users\23242\envs\django_env\lib\site-packages\flower\app.py", line 60, in start

self.listen(self.options.port, address=self.options.address,

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\web.py", line 2116, in listen

server.listen(port, address)

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\tcpserver.py", line 152, in listen

self.add_sockets(sockets)

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\tcpserver.py", line 165, in add_sockets

self._handlers[sock.fileno()] = add_accept_handler(

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\netutil.py", line 279, in add_accept_handler

io_loop.add_handler(sock, accept_handler, IOLoop.READ)

File "c:\users\23242\envs\django_env\lib\site-packages\tornado\platform\asyncio.py", line 100, in add_handler

self.asyncio_loop.add_reader(fd, self._handle_events, fd, IOLoop.READ)

File "c:\users\23242\appdata\local\programs\python\python38-32\lib\asyncio\events.py", line 501, in add_reader

raise NotImplementedError

NotImplementedError

请问老师这个该怎么解决？

Python 全系列/第十二阶段：Python_Django3框架/Django进阶 31289楼

为什么会运行如下错误呢，该怎么解决？

package Person;
/**
 * 
 * @author zhang - dell
 *
 */

class Person{
	String name;
	int age;
	@Override
	public String toString() {
		// TODO Auto-generated method stub
		return name +",年龄：" + age;
	}
	
	
}
public class Test {
	public static void main(String[] args) {
		Person p = new Person();
		p.age = 20;
		p.name = "李四";
		System.out.println("info:"+p);
		Test t = new Test();
		System.out.println(t);
	}

}

运行结果

JAVA 全系列/第一阶段：JAVA 快速入门/面向对象详解和JVM底层内存分析 31290楼

同学您好