import sublime, sublime_plugin, os, subprocess

class ConemuCommand(sublime_plugin.TextCommand):
  def run(self, edit):

    if os.name == "nt":
      startupinfo = subprocess.STARTUPINFO()
      startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW

      process = subprocess.Popen(('c:/Program Files (x86)/ConEmu/ConEmu.exe', '/single', self.view.file_name()),
        stdin=subprocess.PIPE, stdout=subprocess.PIPE, startupinfo=startupinfo)