def __init__(self, lib, rows, cols, cmd, args, cwd=None, env=None):
super(ExpectProcess, self).__init__()
self.vterm = VTerm(lib, rows, cols)
self.lock = threading.Lock()
self.rows = rows
self.cols = cols
self.cmd = cmd
self.args = args
self.cwd = cwd
self.env = env
self.buffer = []
self.child_lock = threading.Lock()
