gnar

Shred the gnar in Python by using (half) pipes!

Various shell builtins are implemented, allowing for piping commands together.

gnar.Pipeable can be implemented on an arbitrary class; this class only requires you to implement Pipeable.run that takes a single parameter.

Examples

"/some/dir" | ls | cat | sed(r"this", r"that")

The above example replaces all occurrences of this with that for all files in /some/dir. Since ls() returns a list, cat() and sed() operate on each file in the list.

Notice that both ls and cat can be used with out parenthesis; this is due to their constructors not requiring any parameters. Functions like sed, and others that require constructor parameters, must be called with parenthesis.

>>> "one:two:three:four" | cut([2,3], ":")
['two', 'three']