def include_pattern(self, pattern, anchor=1, prefix=None, is_regex=0):
        # XXX docstring lying about what the special chars are?
        files_found = 0
        pattern_re = translate_pattern(pattern, anchor, prefix, is_regex)
        self.debug_print("include_pattern: applying regex r'%s'" %
                         pattern_re.pattern)

        # delayed loading of allfiles list
        if self.allfiles is None:
            self.findall()

        for name in self.allfiles:
            if pattern_re.search(name):
                self.debug_print(" adding " + name)
                self.files.append(name)
                files_found = 1

        return files_found
Select strings (presumably filenames) from 'self.files' that
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/distutils/filelist.py/FileList.include_pattern