![]() Stdout get updated every 0.5 seconds for every two lines to contain: 0Īnd each log file contains the respective log for a given process. T2 = threading.Thread(target=output_reader, args=(proc2, file2)) T1 = threading.Thread(target=output_reader, args=(proc1, file1)) Subprocess.Popen(, stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc2, \ In this example, we use the subprocess.Popen() function to start two shell commands, sleep 10 and sleep 15, in the background. With subprocess.Popen(, stdout=subprocess.PIPE, stderr=subprocess.PIPE) as proc1, \ The threading module allows us to do that.įirst, have a look at how to do the output redirection part alone in this question: Python Popen: Write to stdout AND log file simultaneously See the documentation of loop.subprocessshell () for other parameters. For example, I wanted to launch two processes that talk over a port between them, and save their stdout to a log file and stdout. The limit argument sets the buffer limit for StreamReader wrappers for Process.stdout and Process.stderr (if subprocess.PIPE is passed to stdout and stderr arguments). However, there are cases where you need this. Both capture output and run on background with threadingĪs mentioned on this answer, if you capture the output with stdout= and then try to read(), then the process blocks.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |