Python 检查程序是否以编程方式运行
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Checking if program is running programmatically
提问by Sande
I was wondering how you could check if program is running using python and if not run it. I have two python scripts one is GUI which monitors another script.So basically if second script for some reason crashes I would like it start over.
我想知道如何检查程序是否正在使用 python 运行，如果没有运行它。我有两个 python 脚本，一个是监视另一个脚本的 GUI。所以基本上如果第二个脚本由于某种原因崩溃，我希望它重新开始。
n.b. I'm using python 3.4.2on Windows.
nb 我python 3.4.2在 Windows 上使用。
回答by
The module psutil can help you. To list all process runing use:
模块 psutil 可以帮助您。要列出所有正在运行的进程，请使用：
import psutil
print(psutil.pids()) # Print all pids
To access the process information, use:
要访问进程信息，请使用：
p = psutil.Process(1245) # The pid of desired process
print(p.name()) # If the name is "python.exe" is called by python
print(p.cmdline()) # Is the command line this process has been called with
If you use psutil.pids()on a for, you can verify all if this process uses python, like:
如果psutil.pids()在 for 上使用，则可以验证此过程是否使用 python，例如：
for pid in psutil.pids():
p = psutil.Process(pid)
if p.name() == "python.exe":
print("Called By Python:"+ str(p.cmdline())
The documentation of psutil is available on: https://pypi.python.org/pypi/psutil
psutil 的文档位于：https://pypi.python.org/pypi/psutil
EDIT 1
编辑 1
Supposing if the name of script is Pinger.py, you can use this function
假设脚本的名字是Pinger.py，你可以使用这个函数
def verification():
for pid in psutil.pids():
p = psutil.Process(pid)
if p.name() == "python.exe" and len(p.cmdline()) > 1 and "Pinger.py" in p.cmdline()[1]:
print ("running")
