How to get Process name by Python?

Question

I want to get process name (ex:notepad.exe) by using win32 api in Python , so the code like ,

hwnd = FindWindow(None,"123.txt - notepad")
threadid ,pid = win32process.GetWindowThreadProcessId(hwnd)
print('pid=' + str(pid))
handle = win32api.OpenProcess(win32con.PROCESS_QUERY_INFORMATION | win32con.PROCESS_VM_READ, FALSE, pid)
proc_name = win32process.GetModuleFileNameEx(handle, 0)

but the exception occur ,

pywintypes.error: (299, 'GetModuleFileNameEx', 'ReadProcessMemory
or WriteProcessMemory ....exception')

How can I solve this problem?

Thanks.

Vasily Ryabov · Accepted Answer · 2017-03-05 11:23:07Z

3

This is a bit modified code from pywinauto getting executable path and name of the process using PyWin32 only:

hwnd = FindWindow(None,"123.txt - notepad")
threadid, pid = win32process.GetWindowThreadProcessId(hwnd)
print('pid=' + str(pid))

from win32com.client import GetObject
_wmi = GetObject('winmgmts:')

# collect all the running processes
processes = _wmi.ExecQuery('Select * from win32_process')
for p in processes:
    if isinstance(p.ProcessId, int) and p.ProcessId == pid:
        print((p.ProcessId, p.ExecutablePath, p.CommandLine, p.Name))

No need to install WMI or psutil.

answered Mar 5, 2017 at 11:23

Vasily Ryabov

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Sudheesh Singanamalla · Accepted Answer · 2017-02-03 06:18:38Z

1

You can use the wmi python module or expose the WMIC command line utility to get the list of active processes.

import wmi
c = wmi.WMI ()

for process in c.Win32_Process ():
  print process.ProcessId, process.Name

answered Feb 3, 2017 at 6:18

Sudheesh Singanamalla

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damnever · Accepted Answer · 2017-02-03 06:26:04Z

1

You can use psutil, it's more simpler and pythonic: psutil.Process().name() , and it will work on both Windows and POSIX.

answered Feb 3, 2017 at 6:26

damnever

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1 Comment

Relax ZeroC Over a year ago

thanks,I know I can use psutil , but can I use win32 api directly ?

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