If you want to run a command on the host operating system, you'll want to use python's subprocess module. It provides a means of safely spawning a subprocess, and passing parameters in a way that does not expose security vulnerabilities.
There are a lot of variations on how this can be used, these are only the methods I use most frequently.
Popen Shortcutsimport subprocess # shortcuts subprocess.check_call(['netstat', '-an'], universal_newlines=True)
The Popen objects are the most powerful, but most verbose way of managing processes.# redirecting streams between processes pipe1 = subprocess.Popen(['tasklist'], stdout=subprocess.PIPE) pipe2 = subprocess.Popen(['find', '/I', 'python'], stdin=pipe1.stdout, stdout=subprocess.PIPE) (stdout, stderr) = pipe2.communicate()
Windows executables are either built as console-applications (require console) or gui-applications (do not show console).
On windows, you can use
pythonw.exeto launch an application without a console.
Regardless of this decision, you can control whether or not a subprocess should open a new console while it runs.import subprocess # don't open new console window for subprocess startupinfo = subprocess.STARTUPINFO() startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW subprocess.Popen(['foo.exe'], startupinfo=startupinfo)
import sys sys.exit(1) # exit with fail
import os os.environ['FOO'] = 'bar'