python2字典中，如何根据key取出value?字典为：{'tomcat85linux': '/', 'xconfig': '/bin/xconfig-server/config', 'sac': '/bin/web', 'activemq514linux': '/bin/linux-x86-64', 'rabbitmq': '/bin/rabbitmq-auth/config', 'ls': '/script/license', 'xresmgr': '/bin/xresmgr-rms/config', 'loganalysis': '/bin/loges', 'xjob': '/bin/xjob-server/config', 'xdictionary': '/bin/xdictionary-dds/config'}

可以使用字典的get()方法根据key取出value，如下所示：

my_dict = {'tomcat85linux': '/', 'xconfig': '/bin/xconfig-server/config', 'sac': '/bin/web', 'activemq514linux': '/bin/linux-x86-64', 'rabbitmq': '/bin/rabbitmq-auth/config', 'ls': '/script/license', 'xresmgr': '/bin/xresmgr-rms/config', 'loganalysis': '/bin/loges', 'xjob': '/bin/xjob-server/config', 'xdictionary': '/bin/xdictionary-dds/config'}

value = my_dict.get('tomcat85linux')
print(value)

输出结果为：

/

相关问题

如何用subprocess.Popen执行带有很多入参的python脚本，并得到它的PID？其中入参为/opt/hikvision/web/components/tomcat85linux64.1/ /opt/hikvision/web/components/xconfig.1/bin/xconfig-server/config /opt/hikvision/web/components/sac.1/bin/web /opt/hikvision/web/components/activemq514linux64.1/bin/linux-x86-64 /opt/hikvision/web/components/rabbitmq.1/bin/rabbitmq-auth/config /opt/hikvision/web/components/ls.1/script/license /opt/hikvision/web/components/xresmgr.1/bin/xresmgr-rms/config /opt/hikvision/web/components/loganalysis.1/bin/loges /opt/hikvision/web/components/xjob.1/bin/xjob-server/config /opt/hikvision/web/components/xdictionary.1/bin/xdictionary-dds/config

可以使用 `subprocess.Popen` 来执行带有很多入参的 Python 脚本，并得到它的 PID。下面是一个例子：

import subprocess

# 定义命令行参数
args = ["python", "script.py", "/opt/hikvision/web/components/tomcat85linux64.1/", "/opt/hikvision/web/components/xconfig.1/bin/xconfig-server/config", "/opt/hikvision/web/components/sac.1/bin/web", "/opt/hikvision/web/components/activemq514linux64.1/bin/linux-x86-64", "/opt/hikvision/web/components/rabbitmq.1/bin/rabbitmq-auth/config", "/opt/hikvision/web/components/ls.1/script/license", "/opt/hikvision/web/components/xresmgr.1/bin/xresmgr-rms/config", "/opt/hikvision/web/components/loganalysis.1/bin/loges", "/opt/hikvision/web/components/xjob.1/bin/xjob-server/config", "/opt/hikvision/web/components/xdictionary.1/bin/xdictionary-dds/config"]

# 执行脚本
process = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

# 获取进程 ID
pid = process.pid

# 打印进程 ID
print("PID:", pid)

# 获取输出
output, error = process.communicate()

# 打印输出和错误
print(output.decode())
print(error.decode())

上述代码中，`args` 变量定义了要执行的命令和参数。在这个例子中，我们要执行 `script.py` 脚本，并传入多个命令行参数，每个参数都是一个路径。

然后，我们使用 `subprocess.Popen` 来执行这个命令。`stdout=subprocess.PIPE` 和 `stderr=subprocess.PIPE` 参数表示要把标准输出和标准错误输出都保存下来，以便后面使用。

接着，我们使用 `process.pid` 属性来获取进程的 PID，并将其保存在变量 `pid` 中。

最后，我们打印进程的 PID，获取脚本的输出和错误信息，并通过 `decode()` 方法将字节字符串转换为文本字符串。最后，我们打印输出和错误信息。

python2，一个进程为inotify.py，输入参数为/opt/hikvision/web/components/tomcat85linux64.1/ /opt/hikvision/web/components/xconfig.1/bin/xconfig-server/config /opt/hikvision/web/components/sac.1/bin/web /opt/hikvision/web/components/activemq514linux64.1/bin/linux-x86-64 /opt/hikvision/web/components/rabbitmq.1/bin/rabbitmq-auth/config /opt/hikvision/web/components/ls.1/script/license /opt/hikvision/web/components/xresmgr.1/bin/xresmgr-rms/config /opt/hikvision/web/components/loganalysis.1/bin/loges /opt/hikvision/web/components/xjob.1/bin/xjob-server/config /opt/hikvision/web/components/xdictionary.1/bin/xdictionary-dds/config，另一个进程为jes-agent.1.service，通过CGroup将inotify.py进程作为子进程挂载到jes-agent.1.service进程中

好的，你的问题是如何使用CGroup将带有输入参数的inotify.py进程作为子进程挂载到jes-agent.1.service进程中。在Python2中，你可以使用cgroups模块来进行CGroup的相关操作，同时可以使用subprocess模块来启动进程。

以下是一个简单的示例代码，可以供你参考：

import cgroups
import subprocess

# 创建CGroup
cg = cgroups.Cgroup('mygroup')

# 将带有输入参数的inotify.py进程加入到CGroup中
inotify_params = ['/opt/hikvision/web/components/tomcat85linux64.1/', '/opt/hikvision/web/components/xconfig.1/bin/xconfig-server/config', '/opt/hikvision/web/components/sac.1/bin/web', '/opt/hikvision/web/components/activemq514linux64.1/bin/linux-x86-64', '/opt/hikvision/web/components/rabbitmq.1/bin/rabbitmq-auth/config', '/opt/hikvision/web/components/ls.1/script/license', '/opt/hikvision/web/components/xresmgr.1/bin/xresmgr-rms/config', '/opt/hikvision/web/components/loganalysis.1/bin/loges', '/opt/hikvision/web/components/xjob.1/bin/xjob-server/config', '/opt/hikvision/web/components/xdictionary.1/bin/xdictionary-dds/config']
inotify = subprocess.Popen(['python', 'inotify.py'] + inotify_params, stdout=subprocess.PIPE)
cg.add_task(inotify.pid)

# 将inotify.py作为子进程挂载到jes-agent.1.service进程中
jes_agent = subprocess.Popen(['jes-agent.1.service'], preexec_fn=cg.set_pid)

需要注意的是，以上代码仅供参考，具体的实现方式还需要根据你的具体需求进行调整。同时，你需要确保inotify.py和jes-agent.1.service进程都已经启动，并且你需要根据实际情况调整进程的启动参数。