def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if not trimmed_value in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError('find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if not trimmed_value in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError('find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def test_pep420_ns_package(self):
        packages = find_namespace_packages(
            self.dist_dir, include=['pkg*'], exclude=['pkg.subpkg.assets'])
        self._assert_packages(packages, ['pkg', 'pkg.nspkg', 'pkg.subpkg']) 

def test_pep420_ns_package_no_includes(self):
        packages = find_namespace_packages(
            self.dist_dir, exclude=['pkg.subpkg.assets'])
        self._assert_packages(
            packages, ['docs', 'pkg', 'pkg.nspkg', 'pkg.subpkg']) 

def test_pep420_ns_package_no_includes_or_excludes(self):
        packages = find_namespace_packages(self.dist_dir)
        expected = [
            'docs', 'pkg', 'pkg.nspkg', 'pkg.subpkg', 'pkg.subpkg.assets']
        self._assert_packages(packages, expected) 

def test_regular_package_with_nested_pep420_ns_packages(self):
        self._touch('__init__.py', self.pkg_dir)
        packages = find_namespace_packages(
            self.dist_dir, exclude=['docs', 'pkg.subpkg.assets'])
        self._assert_packages(packages, ['pkg', 'pkg.nspkg', 'pkg.subpkg']) 

def test_pep420_ns_package_no_non_package_dirs(self):
        shutil.rmtree(self.docs_dir)
        shutil.rmtree(os.path.join(self.dist_dir, 'pkg/subpkg/assets'))
        packages = find_namespace_packages(self.dist_dir)
        self._assert_packages(packages, ['pkg', 'pkg.nspkg', 'pkg.subpkg']) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs) 

def _parse_packages(self, value):
        """Parses `packages` option value.

        :param value:
        :rtype: list
        """
        find_directives = ['find:', 'find_namespace:']
        trimmed_value = value.strip()

        if trimmed_value not in find_directives:
            return self._parse_list(value)

        findns = trimmed_value == find_directives[1]
        if findns and not PY3:
            raise DistutilsOptionError(
                'find_namespace: directive is unsupported on Python < 3.3')

        # Read function arguments from a dedicated section.
        find_kwargs = self.parse_section_packages__find(
            self.sections.get('packages.find', {}))

        if findns:
            from setuptools import find_namespace_packages as find_packages
        else:
            from setuptools import find_packages

        return find_packages(**find_kwargs)