Python结构：如何在屏幕会话中执行命令

我正在做以下工作：

with settings(host_string=h['server'].rstrip('\n').strip(), warn_only=True):
                # run("hostname -f")
                with cd('path/folder'):
                  # Check for Screen session, if none, create one otherwise screen -d -r
                    result = run('screen -r')
                    output_stdout = result.stdout.strip()
                    print('OUTPUT = ' + output_stdout)
                    if 'There is a screen on' in output_stdout:
                        run('screen -d -r')
                        run('exit')
                    elif 'There is no screen to be resumed' in output_stdout:
                        run('screen')
                        # Checking screen stats
                        run('screen -r')
                       # Generate Link File
                       run('python3 file.py ' + str(start) + ' ' + str(end))

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一旦屏幕打开，织物就会进入无限循环，永远不会出现。您是否尝试过执行

screen-Rd

：

-d -R   Reattach a session and if necessary detach or even create it first.

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您是否尝试过执行

screen-Rd

：

-d -R   Reattach a session and if necessary detach or even create it first.