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compared to invoking a python library function that does the same thing.
I’ve some legacy code that uses Popen to invoke a executable with some parameters.
Now there a python library that supports that same function.
I was wondering what the performance implications are.
Forking a separate process to do something is almost always much more expensive than calling a function that does the same thing. But if that Python function is very inefficient, and the OS forks new processes quickly (i.e., is a UNIX variant,) you could imagine a rare case where this is not true — but it will definitely be rare.