這個簡單的 python 腳本生成 stdout/stderr 消息，每秒兩條。#!/usr/bin/env python3import sys, timefor a in range(10):    if(a%2==0): print(a, file=sys.stdout)    else: print(a, file=sys.stderr)    time.sleep(0.5)print("This is an STDOUT message")print("This is an STDERR message", file=sys.stderr)sys.exit(1)示例輸出：> ./runstatus.py 0    <- STDOUT, after 0.5s1    <- STDERR, after 0.5s2    <- STDOUT, after 0.5s3    ...456789This is an STDOUT message     <- STDOUTThis is an STDERR message     <- STDERR我需要用 golang 實時捕獲 stdout 和 stderr 輸出，所以我還發現了這個：package mainimport("bufio"; "fmt"; "os/exec";)func readerr(scanner *bufio.Scanner, channel string) {    for scanner.Scan() { fmt.Println(channel, scanner.Text()); }}func main() {    cmd:=exec.Command("./runstatus.py")    stdout, _:=cmd.StdoutPipe()    stderr, _:=cmd.StderrPipe()    scanout:=bufio.NewScanner(stdout)    scanerr:=bufio.NewScanner(stderr)    scanout.Split(bufio.ScanLines)    scanerr.Split(bufio.ScanLines)    go readerr(scanout, "out:")    go readerr(scanerr, "err:")    cmd.Start()    cmd.Wait()}但問題是這只適用于 STDERR?。?！Stderr 是實時的，但 stdout 不是，它在執行結束時突然顛簸：err: 1    <- STDERR, after 1serr: 3    <- STDERR, after 1serr: 5err: 7err: 9out: 0    <- STDOUT, after 5s, from here, the rest just flushes abruptly!out: 2out: 4out: 6out: 8out: This is an STDOUT messageerr: This is an STDERR message我究竟做錯了什么？