tempfile.gettempdirb() Same as gettempdir() but the return value is in bytes.

stat.S_ISBLK(mode) Return non-zero if the mode is from a block special device file.

os.path.abspath(path) Return a normalized absolutized version of the pathname path. On most platforms, this is equivalent

fnmatch.fnmatchcase(filename, pattern) Test whether filename matches pattern, returning

fileinput.isfirstline() Returns true if the line just read is the first line of its file, otherwise returns false.

Path.group() Return the name of the group owning the file.

shutil.copyfile(src, dst, *, follow_symlinks=True) Copy the contents (no metadata) of the file named src to a file

linecache.clearcache() Clear the cache. Use this function if you no longer need lines from files previously read using getline()

right The directory b.

common Files and subdirectories in both a and b.