The glob module finds all the pathnames matching a specified
pattern according to the rules used by the Unix shell. No tilde
expansion is done, but *, ?, and character ranges
expressed with  will be correctly matched. This is done by
using the os.listdir() and fnmatch.fnmatch()
functions in concert, and not by actually invoking a subshell. (For
tilde and shell variable expansion, use os.path.expanduser()
Returns a possibly-empty list of path names that match pathname,
which must be a string containing a path specification.
pathname can be either absolute (like
/usr/src/Python-1.5/Makefile) or relative (like
../../Tools/*/*.gif), and can contain shell-style wildcards.
For example, consider a directory containing only the following files:
1.gif, 2.txt, and card.gif. glob()
will produce the following results. Notice how any leading components
of the path are preserved.