Running subprocesses from Python

The underlying philosophy of Unix is to build small, specialised programs that do one job extremely well. You then chain these together to build more complex behaviours. There is no reason why you shouldn’t use the same philosophy within your Python scripts. There are several utility programs available to use with very little work on your part. The older way of handling this was through using functions like “popen()” and “spawnl()” from the os module, but a better way of running other programs is by using the subprocess module instead. You can then launch a program, like ls, by using: This provides you with a long file listing for the current directory. The function “run()” was introduced in Python 3.5 and is the suggested way of handling this. If you…

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The Python Book (Digital) - 1 Issue, The Python Book 16th Edition

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