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python如何下载指定版本TensorFlow_tensorflow下载

作者：爱喝兽奶帝天荒 | 2024-08-06 19:13:33

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tensorflow下载

教程下载地址： 网赚博客http://www.piaodoo.com/创业项目排行榜前十名http://www.piaodoo.com/


一、python安装与下载依赖

依赖版本

TensorFlow>=2.3.0
Keras  >= 2.4.3 
Numpy < 1.19.0
Pandas >= 1.1.0
scikit-learn >= 0.23.2
librosa >=0.8.0
scipy==1.4.1

依赖下载

TensorFlow>=2.3.0 pip3 install tensorflow-cpu==2.3.0 -i https://pypi.douban.com/simple/
Keras >= 2.4.3 pip3 install Keras==2.4.3 -i https://pypi.douban.com/simple/
Pandas >= 1.1.0 pip3 install Pandas==1.1.0 -i https://pypi.douban.com/simple/
scikit-learn >= 0.23.2 pip3 install scikit-learn==0.23.2 -i https://pypi.douban.com/simple/
librosa >=1.19.1 pip3 install librosa==0.8.0 -i https://pypi.douban.com/simple/
scipy==1.4.1 pip3 install scipy==1.4.1 -i https://pypi.douban.com/simple/

安装python3

yum -y install gcc
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel
wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tgz
tar -zxvf Python-3.7.3.tgz
mkdir /usr/local/python3
cd Python-3.7.3
./configure --prefix=/usr/local/python3
make && make install
ln -sf /usr/local/python3/bin/python3.7 /usr/bin/python3
ln -sf /usr/local/python3/bin/pip3.7 /usr/bin/pip3

验证

pip3 list

pip3升级

pip3 --default-timeout=10000 install -U pip

pip3 卸载与安装

  • pip3 install 包名 例如：pip3 install Pandas
  • pip3 uninstall 包名 例如： pip3 uninstall Pandas

二、mybatis plus 乐观锁配置

import com.baomidou.mybatisplus.extension.plugins.OptimisticLockerInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**

  • mybatis plus 乐观锁配置
  • @author nick
    /
    @EnableTransactionManagement
    @Configuration
    public class MybatisPlusConfig {
    /    *
    • 乐观锁
      */
      @Bean
      public OptimisticLockerInterceptor optimisticLockerInterceptor() {
      return new OptimisticLockerInterceptor();
      }
      }

三、@Scheduled定时任务升级分布式定时任务

/**
 * DisSchedule切面
 */
@Order(100)
@Aspect
@Slf4j
public class DisScheduleAspect {

public static final String SERVER_NAME = "serverName";

private final IDisScheduleService disScheduleService;

private final String serverName;

public DisScheduleAspect(
	IDisScheduleService disScheduleService,
	Environment environment) {
	Preconditions.checkNotNull(disScheduleService);
	this.disScheduleService = disScheduleService;
	Preconditions.checkNotNull(environment);
	String serverName = environment.getProperty(SERVER_NAME);
	Preconditions.checkArgument(!Strings.isNullOrEmpty(serverName));
	this.serverName = serverName;
}

/**
 * 方法上有注解SaveLog
 */
@Pointcut(value = "@annotation(com.citydo.xclouddesk.interceptor.annotation.DisSchedule)")
public void disScheduleAnnotation() {
}

@Around(value = "disScheduleAnnotation() &amp;&amp; @annotation(disSchedule)")
public Object disSchedule(ProceedingJoinPoint joinPoint, DisSchedule disSchedule) throws Throwable {
	Preconditions.checkNotNull(disSchedule);
	// 当前时间
	Date curDate = TimeUtil.getCurDate();
	// 获取name
	String name = disSchedule.name();
	if (Strings.isNullOrEmpty(name)) {
		// 方法名
		Signature signature = joinPoint.getSignature();
		name = signature.getName();
	}
	// 时间间隔
	int duration = disSchedule.duration();
	if (duration &lt;= 0) {
		log.error(
			"disSchedule fail, duration {} is less or equal 0, name : {}",
			duration,
			name
		);
		return null;
	}
	// 时间间隔的单位
	TimeUnit unit = disSchedule.unit().getUnit();
	// 转化为毫秒
	long millis = unit.toMillis(duration);
	// 获取当前任务所属的开始时间
	Date taskDate = TimeUtil.getMillisDate(curDate, (int) millis);
	// 当前服务是否属于线上服务
	if (!disScheduleService.serverNameIsValid(serverName)) {
		log.info(
			"disSchedule fail, serverName is invalid, serverName : {} , name : {} , taskDate : {}",
			serverName,
			name,
			TimeUtil.specialFormatToDateStr(taskDate)
		);
		return null;
	}
	if (!disScheduleService.tryGetLock(name, taskDate, serverName)) {
		log.info(
			"Distributed lock not acquired, name : {} , taskDate : {}",
			name,
			TimeUtil.specialFormatToDateStr(taskDate)
		);
		return null;
	}
	// 执行正常的方法逻辑
	return joinPoint.proceed();
}

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}

/**
 * 在方法执行之前，决定当前是否需要执行定时调度任务
 * @author nick
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface DisSchedule {

/**
 * 定时调度任务的名称(默认是方法名)
 */
String name() default "";

/**
 * 任务的间隔时间
 */
int duration();

/**
 * duration的时间单位(默认：分钟)
 */
DisScheduleUnit unit() default DisScheduleUnit.MINUTES;

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}

/**
 * 分布式定时调度服务
 * @author nick
 */
public interface IDisScheduleService {

/**
 * 重新加载
 */
void reload();

/**
 * serverName是否有效
 */
boolean serverNameIsValid(String serverName);

/**
 * 尝试获取锁
 */
boolean tryGetLock(String taskName, Date taskDate, String serverName);

/**
 * 添加当前的serverName
 */
void addServerName(String serverName);

/**
 * 移除当前的serverName
 */
void removeServerName(String serverName);

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}

/**
 * redis实现
 */
@Slf4j
@Service
public class DisScheduleRedisServiceImpl implements IDisScheduleService {

public static final String DIS_SCHEDULE_SERVER_NAME = "disScheduleServerName";

private final IRedisManager redisManager;

public DisScheduleRedisServiceImpl(IRedisManager redisManager) {
	Preconditions.checkNotNull(redisManager);
	this.redisManager = redisManager;
}

@Override
public void reload() {
	// do nothing
}

@Override
public boolean serverNameIsValid(String serverName) {
	try {
		return redisManager.isMember(DIS_SCHEDULE_SERVER_NAME, serverName);
	} catch (Exception e) {
		log.error(
			"DisScheduleRedisServiceImpl-serverNameIsValid fail, serverName : {} , exception : {}",
			serverName,
			e
		);
	}
	return false;
}

@Override
public boolean tryGetLock(String taskName, Date taskDate, String serverName) {
	try {
		return redisManager.setNx(
			taskName + "_" + TimeUtil.specialFormatToDateStr(taskDate),
			serverName
		);
	} catch (Exception e) {
		log.error(
			"DisScheduleRedisServiceImpl-tryGetLock fail, taskName : {} , taskDate : {} , serverName : {} , exception : {}",
			taskName,
			TimeUtil.specialFormatToDateStr(taskDate),
			serverName,
			e
		);
	}

	return false;
}

@Override
public void addServerName(String serverName) {
	Preconditions.checkArgument(!Strings.isNullOrEmpty(serverName));
	redisManager.sAdd(DIS_SCHEDULE_SERVER_NAME, serverName);
}

@Override
public void removeServerName(String serverName) {
	Preconditions.checkArgument(!Strings.isNullOrEmpty(serverName));
	redisManager.sRem(DIS_SCHEDULE_SERVER_NAME, serverName);
}

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// @DisSchedule(name = “testSchedule”, duration = 1, unit = DisScheduleUnit.MINUTES)
// @Scheduled(cron = “0 0/1 * * * ?”)
// public void testSchedule() {
// logger.info(“输出”);
// }
}

public interface IRedisManager {

/**
 * 向set中添加元素
 */
boolean sAdd(String key, String value);

/**
 * set中是否存在value
 */
boolean isMember(String key, String value);

/**
 * 移除set中的元素
 */
void sRem(String key, String value);


/**
 * 设置字符串的值（如果不存在的话）
 */
boolean setNx(String key, String value);

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}

/**
 * 基于jedis实现的redisManager
 */
@Service
public class JedisManagerImpl implements IRedisManager {

@Autowired
private JedisPoolClient jedisPoolClient;

/**
 * 返回1说明添加成功，返回0说明已经存在
 * @param key
 * @param value
 * @return
 */
@Override
public boolean sAdd(String key, String value) {
	Preconditions.checkArgument(!Strings.isNullOrEmpty(key));
	Preconditions.checkArgument(!Strings.isNullOrEmpty(value));
	return jedisPoolClient.sAdd(key, value) == 1L;
}

@Override
public boolean isMember(String key, String value) {
	Preconditions.checkArgument(!Strings.isNullOrEmpty(key));
	Preconditions.checkArgument(!Strings.isNullOrEmpty(value));
	return jedisPoolClient.isMember(key, value);
}

@Override
public void sRem(String key, String value) {
	Preconditions.checkArgument(!Strings.isNullOrEmpty(key));
	Preconditions.checkArgument(!Strings.isNullOrEmpty(value));
	jedisPoolClient.sRem(key, value);
}

@Override
public boolean setNx(String key, String value) {
	Preconditions.checkArgument(!Strings.isNullOrEmpty(key));
	Preconditions.checkArgument(!Strings.isNullOrEmpty(value));
	return jedisPoolClient.setNX(key, value);
}

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}

参考：https://github.com/death00/dis-schedule

四、Multiset与HashMap、Multimap关系

在这里插入图片描述

总结

以上为个人经验，希望能给大家一个参考，也希望大家多多支持网赚博客http://www.piaodoo.com/。

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