[英]How to make a looping BAT script run in the background in Windows 10?
[英]Run a .bat program in the background on Windows
我試圖在新窗口中運行.bat
文件(充當模擬器),因此它必須始終在后台運行。 我認為創建一個新流程是我唯一的選擇。 基本上,我希望我的代碼做這樣的事情:
def startSim:
# open .bat file in a new window
os.system("startsim.bat")
# continue doing other stuff here
print("Simulator started")
我在Windows上,所以我不能做os.fork
。
使用subprocess.Popen
(未在Windows上測試,但應該有效)。
import subprocess
def startSim():
child_process = subprocess.Popen("startsim.bat")
# Do your stuff here.
# You can terminate the child process after done.
child_process.terminate()
# You may want to give it some time to terminate before killing it.
time.sleep(1)
if child_process.returncode is None:
# It has not terminated. Kill it.
child_process.kill()
編輯:您也可以使用os.startfile
(僅限Windows,未經過測試)。
import os
def startSim():
os.startfile("startsim.bat")
# Do your stuff here.
看起來你想要“os.spawn *”,這似乎等同於os.fork,但對於Windows。 一些搜索出現了這個例子:
# File: os-spawn-example-3.py
import os
import string
if os.name in ("nt", "dos"):
exefile = ".exe"
else:
exefile = ""
def spawn(program, *args):
try:
# check if the os module provides a shortcut
return os.spawnvp(program, (program,) + args)
except AttributeError:
pass
try:
spawnv = os.spawnv
except AttributeError:
# assume it's unix
pid = os.fork()
if not pid:
os.execvp(program, (program,) + args)
return os.wait()[0]
else:
# got spawnv but no spawnp: go look for an executable
for path in string.split(os.environ["PATH"], os.pathsep):
file = os.path.join(path, program) + exefile
try:
return spawnv(os.P_WAIT, file, (file,) + args)
except os.error:
pass
raise IOError, "cannot find executable"
#
# try it out!
spawn("python", "hello.py")
print "goodbye"
import subprocess
proc = subprocess.Popen(['/path/script.bat'],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
使用subprocess.Popen()將運行給定的.bat路徑(或任何其他可執行文件)。
如果你確實希望等待進程完成,只需添加proc.wait():
proc.wait()
在Windows上,后台進程稱為“服務”。 查看有關如何使用Python 創建 Windows服務的另一個問題: 創建python win32服務
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