WebJul 9, 2024 · Solution 1. You can use a pipe to read the data from the program's stdout and write it to all the places you want: import sys import subprocess logfile = open ( 'logfile', 'w' ) proc=subprocess.Popen ( [ 'cat', 'file' ], stdout =subprocess.PIPE, stderr =subprocess.STDOUT) for line in proc. stdout : sys. stdout. write ( line ) logfile. write ... WebPopen. subprocess 虽然提供了简易使用的 subprocess.run () 方法,但是这个方法无法做到 实时 输出,也就是命令执行完成之后才能一次性获取命令的输出,即使传入了 stdout=subprocess.PIPE 要求其创建一个管道,仍旧是阻塞式的读取。. stdout 也可以指定为一个流,因此我们 ...
Popen reading from stdout takes a very very long time
http://duoduokou.com/python/40774851727342967917.html WebCurrently I use. p = Popen ( pathToApplication, stdin = PIPE, stdout = PIPE, stderr=PIPE ) Then I can send commands using. p.stdin.write (command) And receive results using. p.stdout.readline () So far so good, but to get the timeout I tried all things I could find but none of them worked. For example: bison arms apartments fargo
Python防止stdout.readline()冻结程序的方法有哪些? w3c笔记
WebNov 12, 2012 · 3. I have a simple python program: test.py: import time for i in range (100000): print i time.sleep (0.5) I want to use another program that executes the above … WebJun 5, 2024 · sys.stdout.flush () line = input('请输入:') 我在test1.py里面加入的time.sleep (50)是为了测试run2.py里的out = proc.stdout.readline ()是否会阻塞。. 结果就是当管道里 … Web整数是一个文件描述符,操作系统用来谈论分配给进程的文件句柄的整数.0、1 和 2 是 stdin、stdout 和 stderr,3 及以上是使用的更多文件描述符. 您收到资源警告是因为您打开了文件句柄,但从未明确关闭它.您只需在 Python 文件对象包装器上调用 .readlines() 或 … daron chevron gift pack 10-piece