How is it slower/matter at all? Goddamn bash calls an external process in if branches, so if a bash script is enough for a given process, than running python inside a vm inside a vm inside a vm will be still fast enough. Scripting doesn’t require performance.
It is slow because the process of interpretation is slow (conditions, number and string operations) and because to achieve anything nontrivial in shell/bash, one _has_ to call external processes, which is slow. In Perl one calls external processes much less because of large amount of capable libraries and Perl is indeed much faster.
This doesn’t make sense. How would python be slower? Bash is indeed the prototypical do what each line says. And there is absolutely no optimizations here.
Python while not the fastest thing out there, basically every implementation does a quick parse phase and run some optimized form.
I meant bash is slower than perl. Python is also slower than perl. Python is quicker than bash in number/string operations in process, but much slower than bash in startup. 'Quick parse phase' is exactly the reason; it is not quick. Try to execute 1000 python processes and then 1000 bash processes that do something simple like add numbers given as command line arguments. Python is order of magnitude slower to finish.
