如何查看 Windows 服务与 Python 的依赖关系？

Question

使用 Windows 服务控制台，您可以在“属性”>“依赖项”下看到服务依赖项。你如何获得与 Python 相同的信息？有没有办法用 psutil 做到这一点？

Answer 1

您可以使用 subprocess 模块查询 sc.exe 以获取您的服务的信息，然后解析出依赖信息。类似于：

import subprocess

def get_service_dependencies(service):
    try:
        dependencies = []  # hold our dependency list
        info = subprocess.check_output(["sc", "qc", service], universal_newlines=True)
        dep_index = info.find("DEPENDENCIES")  # find the DEPENDENCIES entry
        if dep_index != -1:  # make sure we have a dependencies entry
            for line in info[dep_index+12:].split("\n"):  # loop over the remaining lines
                entry, value = line.rsplit(":", 2)  # split each line to entry : value
                if entry.strip():  # next entry encountered, no more dependencies
                    break  # nothing more to do...
                value = value.strip()  # remove the whitespace
                if value:  # if there is a value...
                    dependencies.append(value)  # add it to the dependencies list
        return dependencies or None  # return None if there are no dependencies
    except subprocess.CalledProcessError:  # sc couldn't query this service
        raise ValueError("No such service ({})".format(service))

然后您可以轻松查询依赖项：

print(get_service_dependencies("wudfsvc"))  # query Windows Driver Foundation service
# ['PlugPlay', 'WudfPf']

如何查看 Windows 服务与 Python 的依赖关系？

How to see a Windows service dependencies with Python?

python

windows

service

dependencies

psutil