<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_data_files(dname, ignore=None, parent=None):
 """ Get all the data files that should be included in this distutils Project. 'dname' should be the path to the package that you're distributing. 'ignore' is a list of sub-packages to ignore. This facilitates disparate package hierarchies. That's a fancy way of saying that the 'twisted' package doesn't want to include the 'twisted.conch' package, so it will pass ['conch'] as the value. 'parent' is necessary if you're distributing a subpackage like twisted.conch. 'dname' should point to 'twisted/conch' and 'parent' should point to 'twisted'. This ensures that your data_files are generated correctly, only using relative paths for the first element of the tuple ('twisted/conch/*'). The default 'parent' is the current working directory. """

    parent = parent or "."
    ignore = ignore or []
    result = []
    for directory, subdirectories, filenames in os.walk(dname):
        resultfiles = []
        for exname in EXCLUDE_NAMES:
            if exname in subdirectories:
                subdirectories.remove(exname)
        for ig in ignore:
            if ig in subdirectories:
                subdirectories.remove(ig)
        for filename in _filter_names(filenames):
            resultfiles.append(filename)
        if resultfiles:
            for filename in resultfiles:
                file_path = os.path.join(directory, filename)
                if parent:
                    file_path = file_path.replace(parent + os.sep, '')
                result.append(file_path)

    return result