Question

首先，我知道有很多方法可以捕获shell的输出...我找到this并且工作正常：

from subprocess import Popen, PIPE

with Popen(["ping", "localhost"], stdout=PIPE, bufsize=1, universal_newlines=True) as p:
        for line in p.stdout:
            if "bytes" in line:
                print(line, end='')

但我需要从de cmd获取调试信息，这不起作用...... 我试图从geth得到一些信息，如：

mypc@thispc:~$ geth --light
INFO [07-02|21:56:08] Starting peer-to-peer node               
INFO [07-02|21:56:08] Allocated cache and file handles         
INFO [07-02|21:56:08] Initialised chain configuration          
INFO [07-02|21:56:08] Disk storage enabled for ethash caches   
INFO [07-02|21:56:08] Disk storage enabled for ethash DAGs     
INFO [07-02|21:56:08] Added trusted CHT for mainnet 
INFO [07-02|21:56:08] Loaded most recent local header

这是调试信息所以，我不知道为什么，但我无法正常捕获它。我需要这样的东西：

with Popen(["geth", "--light"], stdout=PIPE, bufsize=1, universal_newlines=True) as p:
        for line in p.stdout:
            if "Loaded" in line:
                print("NICE!!")

有什么办法吗？

Answer 1

感谢 kwarunek 的答案，它有效

调试消息经常在stderr中。尝试捕获stderr stderr = PIPE然后是p.stderr

private void updateToggleButtonStates(ToggleButton[][] buttons, int x, int y) {
    for (int i = 0 ; i < buttons.length ; i++) {
        for (int j = 0 ; j < buttons[i].length ; j++) {
            buttons[i][j].setDisable(Math.abs(i-x) > 1 || Math.abs(j-y) > 1);
        }
    }
}

捕获shell DEBUGGING进程

1 个答案: