Python’s subprocess module allows you to spawn new processes, connect to their input/output/error pipes, and obtain their return codes. It is commonly used to run system-level commands from Python scripts in a secure and portable way.
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What is the purpose of Python’s subprocess module?
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Question 2 of 15
2. Question
Which function is commonly used to run a command and wait for it to complete?
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Question 3 of 15
3. Question
Which subprocess function was introduced to replace older methods like os.system()?
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Question 4 of 15
4. Question
What is returned by subprocess.run()?
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Question 5 of 15
5. Question
What argument must be passed to capture command output in subprocess.run()?
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Question 6 of 15
6. Question
Which parameter allows executing shell commands as if typed directly in the shell?
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Question 7 of 15
7. Question
What does subprocess.call([‘ls’, ‘-l’]) do?
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Question 8 of 15
8. Question
What happens if the command passed to subprocess.call() fails?
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Question 9 of 15
9. Question
Which method is used for asynchronous command execution?
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Question 10 of 15
10. Question
What does Popen allow that run() does not?
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Question 11 of 15
11. Question
How can you send input to a process using subprocess?
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Question 12 of 15
12. Question
What does stderr=subprocess.PIPE do?
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Question 13 of 15
13. Question
Which attribute stores the exit code in a CompletedProcess object?
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Question 14 of 15
14. Question
How can you capture both stdout and stderr together?
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Question 15 of 15
15. Question
What is the recommended way to securely run system commands?
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Summary
The Python subprocess module is used for executing shell/system commands, capturing output, and managing process streams securely. It offers both simple (run(), call()) and advanced (Popen) options for synchronous and asynchronous command execution.
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