大部分的程序是这样的：
from subprocess import Popen, PIPE, STDOUT p = Popen(cmd, stdout=PIPE, stderr=STDOUT, shell=True) while True: print(p.stdout.readline()) if not line: break但是由于子程序没有进行 flush 的话，会把结果缓存到系统中。导致程序运行完成，上面的程序才会进行打出（会一直卡在readline这个函数）。
解决方法：
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, bufsize=1) for line in iter(p.stdout.readline, b''): print line, p.stdout.close() p.wait()实际弱口令我是这样写的
import subprocess #Popen proc = subprocess.Popen(medusaCMD, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True) for line in iter(proc.stdout.readline, 'b'): print line if not subprocess.Popen.poll(proc) is None: if line == "": break proc.stdout.close()记小的写法
proc = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) try: while True: buff = proc.stdout.readline() print(buff) if buff == '' and proc.poll() != None: break else: ..... except Exception: data["status"] = -1 finally: return data 单次管道输出写法
方法一
# -*- coding: UTF-8 -*- import re import sys import subprocess from subprocess import Popen, PIPE, STDOUT #docker_info = {"CONTAINER ID":"", "NAME":"", "CPU %":"", "MEM USAGE / LIMIT":"", \ # "MEM %":"", "NET I/O":"", "BLOCK I/O":"", "PIDS":""} docker_list = [] cmd = "docker stats -a --no-stream" proc = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) try: buff = proc.communicate() stritem = buff[0] str_list = re.split(r' +|\n', stritem) for i in range(8, len(str_list)-1): if i % 8 == 0: value = 0 docker_info = {} docker_info["CONTAINER ID"] = str_list[i] else: value += 1 if value == 1: docker_info["NAME"] = str_list[i] elif value == 2: docker_info["CPU %"] = str_list[i] elif value == 3: docker_info["MEM USAGE / LIMIT"] = str_list[i] elif value == 4: docker_info["MEM %"] = str_list[i] elif value == 5: docker_info["NET I/O"] = str_list[i] elif value == 6: docker_info["BLOCK I/O"] = str_list[i] elif value == 7: docker_info["PIDS"] = str_list[i] docker_list.append(docker_info) value = 0 print docker_list except Exception as e: print "error", e sys.exit(1) proc.stdout.close()方法二（待测试）
import subprocess from multiprocessing.dummy import Pool as ThreadPool command = poc + ' -t ' + ip + ' -p ' + port result = subprocess.getoutput(command) if 'WARNING: SERVER IS VULNERABLE' in result: result = AAAAA else: result = BBBBBB
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