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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def find_package_data( where='.', package='', exclude=standard_exclude, exclude_directories=standard_exclude_directories, only_in_packages=True, show_ignored=False, ):
 """ Return a dictionary suitable for use in ``package_data`` in a distutils ``setup.py`` file. The dictionary looks like:: {'package': [files]} Where ``files`` is a list of all the files in that package that don't match anything in ``exclude``. If ``only_in_packages`` is true, then top-level directories that are not packages won't be included (but directories under packages will). Directories matching any pattern in ``exclude_directories`` will be ignored; by default directories with leading ``.``, ``CVS``, and ``_darcs`` will be ignored. If ``show_ignored`` is true, then all the files that aren't included in package data are shown on stderr (for debugging purposes). Note patterns use wildcards, or can be exact paths (including leading ``./``), and all searching is case-insensitive. This function is by Ian Bicking. """


    out = {}
    stack = [(convert_path(where), '', package, only_in_packages)]
    while stack:
        where, prefix, package, only_in_packages = stack.pop(0)
        for name in os.listdir(where):
            fn = os.path.join(where, name)
            if os.path.isdir(fn):
                bad_name = False
                for pattern in exclude_directories:
                    if (fnmatchcase(name, pattern)
                        or fn.lower() == pattern.lower()):
                        bad_name = True
                        if show_ignored:
                            print >> sys.stderr, (
                                "Directory %s ignored by pattern %s"
                                % (fn, pattern))
                        break
                if bad_name:
                    continue
                if os.path.isfile(os.path.join(fn, '__init__.py')):
                    if not package:
                        new_package = name
                    else:
                        new_package = package + '.' + name
                    stack.append((fn, '', new_package, False))
                else:
                    stack.append((fn,
                                  prefix + name + '/',
                                  package,
                                  only_in_packages))
            elif package or not only_in_packages:
                # is a file
                bad_name = False
                for pattern in exclude:
                    if (fnmatchcase(name, pattern)
                        or fn.lower() == pattern.lower()):
                        bad_name = True
                        if show_ignored:
                            print >> sys.stderr, (
                                "File %s ignored by pattern %s"
                                % (fn, pattern))
                        break
                if bad_name:
                    continue
                out.setdefault(package, []).append(prefix + name)
    return out