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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 fix_permissions (self):
 """Set correct read permissions on POSIX systems. Might also be possible by setting umask?"""

        if os.name == 'posix' and not self.dry_run:
            # Make the data files we just installed world-readable,
            # and the directories world-executable as well.
            for path in self.get_outputs():
                mode = os.stat(path)[stat.ST_MODE]
                if stat.S_ISDIR(mode):
                    mode |= 0o11
                mode |= 0o44
                os.chmod(path, mode)