Process: Use `Popen.communicate()`, not `Popen.wait()`, when stdout or stderr is PIPE to avoid deadlocks · Issue #4173 · robotframework/robotframework · GitHub
![How to launch external processes with Python and the subprocess module - Linux Tutorials - Learn Linux Configuration How to launch external processes with Python and the subprocess module - Linux Tutorials - Learn Linux Configuration](https://linuxconfig.org/wp-content/uploads/2020/12/00-how-to-launch-external-processes-with-python-and-the-subprocess-module.png)
How to launch external processes with Python and the subprocess module - Linux Tutorials - Learn Linux Configuration
![Run a subprocess in python and both show the output in "real time" and save it to a variable - Stack Overflow Run a subprocess in python and both show the output in "real time" and save it to a variable - Stack Overflow](https://i.stack.imgur.com/YS2am.jpg)
Run a subprocess in python and both show the output in "real time" and save it to a variable - Stack Overflow
error proc = subprocess.Popen(command, stderr=subprocess.PIPE) ... all variables are set correctly · Issue #101 · madmaze/pytesseract · GitHub
![python - Run command and get its stdout, stderr separately in near real time like in a terminal - Stack Overflow python - Run command and get its stdout, stderr separately in near real time like in a terminal - Stack Overflow](https://i.stack.imgur.com/Y99ip.png)