How to use the setuptools.extern.six.moves.map function in setuptools

self.install_dir = self.install_purelib
            self.script_dir = self.install_scripts

        if self.prefix == '/usr' and not self.force_installation_into_system_dir:
            raise DistutilsOptionError("""installation into /usr

Trying to install into the system managed parts of the file system. Please
consider to install to another location, or use the option
--force-installation-into-system-dir to overwrite this warning.
""")

        # default --record from the install command
        self.set_undefined_options('install', ('record', 'record'))
        # Should this be moved to the if statement below? It's not used
        # elsewhere
        normpath = map(normalize_path, sys.path)
        self.all_site_dirs = get_site_dirs()
        if self.site_dirs is not None:
            site_dirs = [
                os.path.expanduser(s.strip()) for s in
                self.site_dirs.split(',')
            ]
            for d in site_dirs:
                if not os.path.isdir(d):
                    log.warn("%s (in --site-dirs) does not exist", d)
                elif normalize_path(d) not in normpath:
                    raise DistutilsOptionError(
                        d + " (in --site-dirs) is not on sys.path"
                    )
                else:
                    self.all_site_dirs.append(normalize_path(d))
        if not self.editable:

def delete_blockers(self, blockers):
        extant_blockers = (
            filename for filename in blockers
            if os.path.exists(filename) or os.path.islink(filename)
        )
        list(map(self._delete_path, extant_blockers))

def write_entries(cmd, basename, filename):
    ep = cmd.distribution.entry_points

    if isinstance(ep, six.string_types) or ep is None:
        data = ep
    elif ep is not None:
        data = []
        for section, contents in sorted(ep.items()):
            if not isinstance(contents, six.string_types):
                contents = EntryPoint.parse_group(section, contents)
                contents = '\n'.join(sorted(map(str, contents.values())))
            data.append('[%s]\n%s\n\n' % (section, contents))
        data = ''.join(data)

    cmd.write_or_delete_file('entry points', filename, data, True)

def _write_requirements(stream, reqs):
    lines = yield_lines(reqs or ())
    append_cr = lambda line: line + '\n'
    lines = map(append_cr, lines)
    stream.writelines(lines)

Move requirements in `install_requires` that are using environment
        markers `extras_require`.
        """

        # divide the install_requires into two sets, simple ones still
        # handled by install_requires and more complex ones handled
        # by extras_require.

        def is_simple_req(req):
            return not req.marker

        spec_inst_reqs = getattr(self, 'install_requires', None) or ()
        inst_reqs = list(pkg_resources.parse_requirements(spec_inst_reqs))
        simple_reqs = filter(is_simple_req, inst_reqs)
        complex_reqs = filterfalse(is_simple_req, inst_reqs)
        self.install_requires = list(map(str, simple_reqs))

        for r in complex_reqs:
            self._tmp_extras_require[':' + str(r.marker)].append(r)
        self.extras_require = dict(
            (k, [str(r) for r in map(self._clean_req, v)])
            for k, v in self._tmp_extras_require.items()
        )

def _write_requirements(stream, reqs):
    lines = yield_lines(reqs or ())
    append_cr = lambda line: line + '\n'
    lines = map(append_cr, lines)
    stream.writelines(lines)

def delete_blockers(self, blockers):
        extant_blockers = (
            filename for filename in blockers
            if os.path.exists(filename) or os.path.islink(filename)
        )
        list(map(self._delete_path, extant_blockers))

def _exclude_packages(self, packages):
        if not isinstance(packages, sequence):
            raise DistutilsSetupError(
                "packages: setting must be a list or tuple (%r)" % (packages,)
            )
        list(map(self.exclude_package, packages))

def delete_blockers(self, blockers):
        extant_blockers = (
            filename for filename in blockers
            if os.path.exists(filename) or os.path.islink(filename)
        )
        list(map(self._delete_path, extant_blockers))