pySets is a project that finds the union, intersection or difference between the elements (words or lines) in two files.Usage: pysets [OPTIONS] COMMAND fileA [fileB]Options: -f, --casefold ............... fold all elements to lowercase -l, --line-oriented .......... split files at line boundaries (default) -w, --word-oriented .......... split files at word boundaries -n, --count .................. display number of elements only -o, --slow ................... use generators to conserve memory -q, --quiet .................. no output for subset/supersetCommands: -b, --subset ................. true if all elements of A are in B -p, --superset . .............. true if all elements of B are in A -i, --intersection ........... elements common to A and B (A&B) -u, --union .................. elements from both A and B (A|B) -d, --difference ............. elements in A but not in B (A-B) -s, --symmetric-difference ... elements in A or B, but not both (A^B) or -h, --help ................... this brief help text -v, --version ................ print version information -c, --copyright .............. show copying policyA dash ('-') is a valid alias for standard input. Elements of intersections, unions and differences will appear unordered.