python cpu温度

by Ori Roza

通过Ori Roza

使用Python(和其他一些不错的技巧)检查CPU的温度 (Check the temperature of your CPU using Python (and other cool tricks))

Python’s psutil module provides an interface with all the PC resources and processes.

Python的psutil模块提供了与所有PC资源和进程的接口。

This module is very helpful whether we want to get some data on a specific resource or manage a resource according to its state.

无论我们要获取特定资源上的某些数据还是根据其状态管理资源，此模块都非常有用。

In this article, I will show you the main features of this module and how to use them.

在本文中，我将向您展示该模块的主要功能以及如何使用它们。

获取PC资源信息 (Getting PC resources information)

Let’s see how we can get some info about our PC’s current system state.

让我们看看如何获​​取有关PC当前系统状态的信息。

We can get some info about the CPU since boot time, including how many system calls and context switches it has made:

自启动以来，我们可以获得有关CPU的一些信息，包括它进行了多少次系统调用和上下文切换 ：

In [1]: psutil.cpu_stats()Out[1]: scpustats(ctx_switches=437905181,interrupts=2222556355L,soft_interrupts=0,syscalls=109468308)

We can get some info about the disk and the memory state:

我们可以获得有关磁盘和内存状态的一些信息：

In [1]: psutil.disk_usage("c:")Out[1]: sdiskusage(total=127950385152L,                   used=116934914048L,                   free=11015471104L,                   percent=91.4)

In [2]: psutil.virtual_memory()Out[2]: svmem(total=8488030208L,              available=3647520768L,              percent=57.0,              used=4840509440L,              free=3647520768L)

We can even get some physical information about how many seconds of battery life is left, or the current CPU temperature:

我们甚至可以获得有关剩余电池寿命或当前CPU温度的一些物理信息：

In [1]: psutil.sensors_battery()Out[1]: sbattery(percent=77, secsleft=18305, power_plugged=False)

In [2]: psutil.sensors_temperatures() # In CelsiusOut[2]: {'ACPI\\ThermalZone\\THM0_0':         [shwtemp(label='',          current=49.05000000000001,          high=127.05000000000001,          critical=127.05000000000001)]}

获取有关流程的信息 (Getting Information about Processes)

One of the most powerful features this module provides us is the “Process” class. We can access each process’ resources and statistics and respond accordingly.

该模块为我们提供的最强大的功能之一是“ Process”类。 我们可以访问每个流程的资源和统计信息，并做出相应的响应。

(There are processes that require some admin or system privileges, so after trying to access their instance it will fail with an “AccessDenied” error.)

(有些进程需要某些管理员或系统特权，因此在尝试访问其实例后，它将失败，并显示“ AccessDenied”错误。)

Let’s check this feature out.

让我们检查一下此功能。

First, we create an instance by giving the wanted process ID:

首先，我们通过提供所需的进程ID创建一个实例：

In [1]: p = psutil.Process(9800)

Then, we can access all the information and statistics of the process:

然后，我们可以访问该过程的所有信息和统计信息：

In [1]: p.exe()Out[1]: 'C:\\Windows\\System32\\dllhost.exe'

In [2]: p.cpu_percent()Out[2]: 0.0

In [3]: p.cwd()Out[3]: 'C:\\WINDOWS\\system32'

Let’s create a function that links open connections ports to processes.

让我们创建一个将打开的连接端口链接到进程的函数。

First, we need to iterate all the open connections. ps.net_connections is exactly what we need!

首先，我们需要迭代所有打开的连接。 ps.net_connections正是我们需要的！

In [1]: ps.net_connections?Signature: ps.net_connections(kind='inet')Docstring:Return system-wide socket connections as a list of(fd, family, type, laddr, raddr, status, pid) namedtuples.In case of limited privileges 'fd' and 'pid' may be set to -1and None respectively.The *kind* parameter filters for connections that fit thefollowing criteria:

+------------+----------------------------------------------------+| Kind Value | Connections using                                  |+------------+----------------------------------------------------+| inet       | IPv4 and IPv6                                      || inet4      | IPv4                                               || inet6      | IPv6                                               || tcp        | TCP                                                || tcp4       | TCP over IPv4                                      || tcp6       | TCP over IPv6                                      || udp        | UDP                                                || udp4       | UDP over IPv4                                      || udp6       | UDP over IPv6                                      || unix       | UNIX socket (both UDP and TCP protocols)           || all        | the sum of all the possible families and protocols |+------------+----------------------------------------------------+

We can see that one of the attributes that net_connections returns is “pid”.

我们可以看到net_connections返回的属性之一是“ pid”。

We can link this to a process name:

我们可以将其链接到进程名称：

In [1]: def link_connection_to_process():    ...:     for connection in ps.net_connections():    ...:         try:    ...:             yield [ps.Process(pid=connection.pid).name(),    ...:                   connection]    ...:         except ps.AccessDenied:    ...:             continue # Keep going if we don't have access

We should remember that unless we’ve got some root privileges, we cannot access particular processes. Therefore we need to wrap it in a try-catch statement for handling an “AccessDenied” error.

我们应该记住，除非拥有某些root特权，否则我们将无法访问特定进程。 因此，我们需要将其包装在try-catch语句中，以处理“ AccessDenied”错误。

Let’s check the output.

让我们检查输出。

It will output a lot of data, so let’s print the first member:

它将输出大量数据，因此让我们打印第一个成员：

In [1]: for proc_to_con in ps.net_connections():    ...:     print proc_to_con    ...:     raw_input("...")    ...:['ManagementServer.exe', sconn(fd=-1, family=2, type=1, laddr=addr(ip='127.0.0.1', port=5905), raddr=addr(ip='127.0.0.1', port=49728), status='ESTABLISHED', pid=5224)]...

As we can see, the first member is the process name and the second is the connection data: ip address, port, status and so on.

如我们所见，第一个成员是进程名称，第二个是连接数据：ip地址，端口，状态等。

This function is very useful to explore which ports are used by each processes.

此功能对于探索每个进程使用哪些端口非常有用。

We’ve all gotten the error “This address is already in use” once, haven’t we?

我们一次都收到错误消息“此地址已被使用”，不是吗？

结论 (Conclusion)

The psutil module is a great library for system management. It is useful for managing resources as a part of a code flow.

psutil模块是用于系统管理的出色库。 对于将资源作为代码流的一部分进行管理很有用。

I hope this article taught you something new, and I am looking forward to your feedback. Please, do tell — was this useful for you?

希望本文能教给您一些新的知识，并期待您的反馈。 请告诉-这对您有用吗？

翻译自: https://www.freecodecamp.org/news/using-psutil-in-python-8623d9fac8dd/

python cpu温度