windows下查看所有进程以及pid

import ctypes
import sys
__metaclass__ = type

class PROCESSENTRY32(ctypes.Structure):
_fields_ = [
("dwSize",ctypes.c_ulong),
("cntUsage",ctypes.c_ulong),
("th32ProcessID",ctypes.c_ulong),
("th32DefaultHeapID",ctypes.c_void_p),
("th32ModuleID",ctypes.c_ulong),
("cntThreads",ctypes.c_ulong),
("th32ParentProcessID",ctypes.c_ulong),
("pcPriClassBase",ctypes.c_long),
("dwFlags",ctypes.c_ulong),
("szExeFile",ctypes.c_char*260)
]
def process():
kernel32 = ctypes.windll.LoadLibrary("kernel32.dll")
pHandle = kernel32.CreateToolhelp32Snapshot(0x2,0x0)
if pHandle == -1:
sys.exit()
proc = PROCESSENTRY32()
proc.dwSize = ctypes.sizeof(proc)
while kernel32.Process32Next(pHandle,ctypes.byref(proc)):
print("%d-%s"%(proc.th32ProcessID,ctypes.string_at(proc.szExeFile)))
kernel32.CloseHandle(pHandle)

if __name__ == '__main__':
process()