python subprocess pipe 实时输出日志的操作
* test11.py
import time print "1" time.sleep(2) print "1" time.sleep(2) print "1" time.sleep(2) print "1"
* test.py
import subprocess
p = subprocess.Popen("python test11.py", shell=True, stdout=subprocess.PIPE)
# None表示正在执行中
while p.poll() is None: <br> out = p.stdout.readline() <br> if out != "": <br> print out
补充知识:python 通过 subprocess.Popen执行命令,重定向实时输出
执行命令
import subprocess import sys # 常用编码 GBK = 'gbk' UTF8 = 'utf-8' # 解码方式,一般 py 文件执行为utf-8 ,cmd 命令为 gbk current_encoding = GBK popen = subprocess.Popen('ping www.baidu.com', shell = True, stdout = subprocess.PIPE, stderr = subprocess.PIPE, bufsize = 1) out,err = popen.communicate() print('std_out: ' + out) print('std_err: ' + err) print('returncode: ' + str(popen.returncode))
执行 .py文件
import subprocess import sys # 常用编码 GBK = 'gbk' UTF8 = 'utf-8' current_encoding = UTF8 popen = subprocess.Popen('python D:\code\test.py', stdout = subprocess.PIPE, stderr = subprocess.PIPE, bufsize = 1) out,err = popen.communicate() print('std_out: ' + out) print('std_err: ' + err) print('returncode: ' + str(popen.returncode))
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