![ms. sophie bites on Twitter: "python people: why might subprocess.Popen('wc -l', stdin=subprocess.PIPE, shell=True) sporadically throw "OSError: [Errno 9] Bad file descriptor"? Only happens sometimes. Google has been no help. (Most other people](https://pbs.twimg.com/media/EKFa_hQXYAMyU4d.jpg "ms. sophie bites on Twitter: \"python people: why might subprocess.Popen('wc -l', stdin=subprocess.PIPE, shell=True) sporadically throw \"OSError: [Errno 9] Bad file descriptor\"? Only happens sometimes. Google has been no help. (Most other people")
ms. sophie bites on Twitter: "python people: why might subprocess.Popen('wc -l', stdin=subprocess.PIPE, shell=True) sporadically throw "OSError: [Errno 9] Bad file descriptor"? Only happens sometimes. Google has been no help. (Most other people
![An Introduction to Subprocess in Python With Examples [Updated]](https://www.simplilearn.com/ice9/free_resources_article_thumb/SubprocessInPython_4.png "An Introduction to Subprocess in Python With Examples [Updated]")
An Introduction to Subprocess in Python With Examples [Updated]
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What is a Subprocess in Python? [5 Usage Examples]
Process: Use `Popen.communicate()`, not `Popen.wait()`, when stdout or stderr is PIPE to avoid deadlocks · Issue #4173 · robotframework/robotframework · GitHub
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