How to use the zappa.utilities.copytree function in zappa

def copy_editable_packages(self, egg_links, temp_package_path):
        """ """
        for egg_link in egg_links:
            with open(egg_link, 'rb') as df:
                egg_path = df.read().decode('utf-8').splitlines()[0].strip()
                pkgs = set([x.split(".")[0] for x in find_packages(egg_path, exclude=['test', 'tests'])])
                for pkg in pkgs:
                    copytree(os.path.join(egg_path, pkg), os.path.join(temp_package_path, pkg), metadata=False, symlinks=False)

        if temp_package_path:
            # now remove any egg-links as they will cause issues if they still exist
            for link in glob.glob(os.path.join(temp_package_path, "*.egg-link")):
                os.remove(link)

if split_venv[-1] == split_cwd[-1]:  # pragma: no cover
            print(
                "Warning! Your project and virtualenv have the same name! You may want "
                "to re-create your venv with a new name, or explicitly define a "
                "'project_name', as this may cause errors."
            )

        # First, do the project..
        temp_project_path = tempfile.mkdtemp(prefix='zappa-project')

        if not slim_handler:
            # Slim handler does not take the project files.
            if minify:
                # Related: https://github.com/Miserlou/Zappa/issues/744
                excludes = ZIP_EXCLUDES + exclude + [split_venv[-1]]
                copytree(cwd, temp_project_path, metadata=False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
            else:
                copytree(cwd, temp_project_path, metadata=False, symlinks=False)

        # If a handler_file is supplied, copy that to the root of the package,
        # because that's where AWS Lambda looks for it. It can't be inside a package.
        if handler_file:
            filename = handler_file.split(os.sep)[-1]
            shutil.copy(handler_file, os.path.join(temp_project_path, filename))

        # Create and populate package ID file and write to temp project path
        package_info = {}
        package_info['uuid'] = str(uuid.uuid4())
        package_info['build_time'] = build_time
        package_info['build_platform'] = os.sys.platform
        package_info['build_user'] = getpass.getuser()
        # TODO: Add git head and info?

"Warning! Your project and virtualenv have the same name! You may want "
                "to re-create your venv with a new name, or explicitly define a "
                "'project_name', as this may cause errors."
            )

        # First, do the project..
        temp_project_path = tempfile.mkdtemp(prefix='zappa-project')

        if not slim_handler:
            # Slim handler does not take the project files.
            if minify:
                # Related: https://github.com/Miserlou/Zappa/issues/744
                excludes = ZIP_EXCLUDES + exclude + [split_venv[-1]]
                copytree(cwd, temp_project_path, metadata=False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
            else:
                copytree(cwd, temp_project_path, metadata=False, symlinks=False)

        # If a handler_file is supplied, copy that to the root of the package,
        # because that's where AWS Lambda looks for it. It can't be inside a package.
        if handler_file:
            filename = handler_file.split(os.sep)[-1]
            shutil.copy(handler_file, os.path.join(temp_project_path, filename))

        # Create and populate package ID file and write to temp project path
        package_info = {}
        package_info['uuid'] = str(uuid.uuid4())
        package_info['build_time'] = build_time
        package_info['build_platform'] = os.sys.platform
        package_info['build_user'] = getpass.getuser()
        # TODO: Add git head and info?

        # Ex, from @scoates:

package_id_file.close()

        # Then, do site site-packages..
        egg_links = []
        temp_package_path = tempfile.mkdtemp(prefix='zappa-packages')
        if os.sys.platform == 'win32':
            site_packages = os.path.join(venv, 'Lib', 'site-packages')
        else:
            site_packages = os.path.join(venv, 'lib', get_venv_from_python_version(), 'site-packages')
        egg_links.extend(glob.glob(os.path.join(site_packages, '*.egg-link')))

        if minify:
            excludes = ZIP_EXCLUDES + exclude
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
        else:
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False)

        # We may have 64-bin specific packages too.
        site_packages_64 = os.path.join(venv, 'lib64', get_venv_from_python_version(), 'site-packages')
        if os.path.exists(site_packages_64):
            egg_links.extend(glob.glob(os.path.join(site_packages_64, '*.egg-link')))
            if minify:
                excludes = ZIP_EXCLUDES + exclude
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
            else:
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False)

        if egg_links:
            self.copy_editable_packages(egg_links, temp_package_path)

        copy_tree(temp_package_path, temp_project_path, update=True)

site_packages = os.path.join(venv, 'lib', get_venv_from_python_version(), 'site-packages')
        egg_links.extend(glob.glob(os.path.join(site_packages, '*.egg-link')))

        if minify:
            excludes = ZIP_EXCLUDES + exclude
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
        else:
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False)

        # We may have 64-bin specific packages too.
        site_packages_64 = os.path.join(venv, 'lib64', get_venv_from_python_version(), 'site-packages')
        if os.path.exists(site_packages_64):
            egg_links.extend(glob.glob(os.path.join(site_packages_64, '*.egg-link')))
            if minify:
                excludes = ZIP_EXCLUDES + exclude
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
            else:
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False)

        if egg_links:
            self.copy_editable_packages(egg_links, temp_package_path)

        copy_tree(temp_package_path, temp_project_path, update=True)

        # Then the pre-compiled packages..
        if use_precompiled_packages:
            print("Downloading and installing dependencies..")
            installed_packages = self.get_installed_packages(site_packages, site_packages_64)

            try:
                for installed_package_name, installed_package_version in installed_packages.items():
                    if self.have_correct_lambda_package_version(installed_package_name, installed_package_version):

if minify:
            excludes = ZIP_EXCLUDES + exclude
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
        else:
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False)

        # We may have 64-bin specific packages too.
        site_packages_64 = os.path.join(venv, 'lib64', get_venv_from_python_version(), 'site-packages')
        if os.path.exists(site_packages_64):
            egg_links.extend(glob.glob(os.path.join(site_packages_64, '*.egg-link')))
            if minify:
                excludes = ZIP_EXCLUDES + exclude
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
            else:
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False)

        if egg_links:
            self.copy_editable_packages(egg_links, temp_package_path)

        copy_tree(temp_package_path, temp_project_path, update=True)

        # Then the pre-compiled packages..
        if use_precompiled_packages:
            print("Downloading and installing dependencies..")
            installed_packages = self.get_installed_packages(site_packages, site_packages_64)

            try:
                for installed_package_name, installed_package_version in installed_packages.items():
                    if self.have_correct_lambda_package_version(installed_package_name, installed_package_version):
                        print(" - %s==%s: Using precompiled lambda package " % (installed_package_name, installed_package_version,))
                        self.extract_lambda_package(installed_package_name, temp_project_path)

ve_path = os.path.join(os.getcwd(), 'handler_venv')

        if os.sys.platform == 'win32':
            current_site_packages_dir = os.path.join(current_venv, 'Lib', 'site-packages')
            venv_site_packages_dir = os.path.join(ve_path, 'Lib', 'site-packages')
        else:
            current_site_packages_dir = os.path.join(current_venv, 'lib', get_venv_from_python_version(), 'site-packages')
            venv_site_packages_dir = os.path.join(ve_path, 'lib', get_venv_from_python_version(), 'site-packages')

        if not os.path.isdir(venv_site_packages_dir):
            os.makedirs(venv_site_packages_dir)

        # Copy zappa* to the new virtualenv
        zappa_things = [z for z in os.listdir(current_site_packages_dir) if z.lower()[:5] == 'zappa']
        for z in zappa_things:
            copytree(os.path.join(current_site_packages_dir, z), os.path.join(venv_site_packages_dir, z))

        # Use pip to download zappa's dependencies. Copying from current venv causes issues with things like PyYAML that installs as yaml
        zappa_deps = self.get_deps_list('zappa')
        pkg_list = ['{0!s}=={1!s}'.format(dep, version) for dep, version in zappa_deps]

        # Need to manually add setuptools
        pkg_list.append('setuptools')
        command = ["pip", "install", "--quiet", "--target", venv_site_packages_dir] + pkg_list

        # This is the recommended method for installing packages if you don't
        # to depend on `setuptools`
        # https://github.com/pypa/pip/issues/5240#issuecomment-381662679
        pip_process = subprocess.Popen(command, stdout=subprocess.PIPE)
        # Using communicate() to avoid deadlocks
        pip_process.communicate()
        pip_return_code = pip_process.returncode

except TypeError: # This is a Python 2/3 issue. TODO: Make pretty!
            package_id_file.write(unicode(dumped))
        package_id_file.close()

        # Then, do site site-packages..
        egg_links = []
        temp_package_path = tempfile.mkdtemp(prefix='zappa-packages')
        if os.sys.platform == 'win32':
            site_packages = os.path.join(venv, 'Lib', 'site-packages')
        else:
            site_packages = os.path.join(venv, 'lib', get_venv_from_python_version(), 'site-packages')
        egg_links.extend(glob.glob(os.path.join(site_packages, '*.egg-link')))

        if minify:
            excludes = ZIP_EXCLUDES + exclude
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
        else:
            copytree(site_packages, temp_package_path, metadata=False, symlinks=False)

        # We may have 64-bin specific packages too.
        site_packages_64 = os.path.join(venv, 'lib64', get_venv_from_python_version(), 'site-packages')
        if os.path.exists(site_packages_64):
            egg_links.extend(glob.glob(os.path.join(site_packages_64, '*.egg-link')))
            if minify:
                excludes = ZIP_EXCLUDES + exclude
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False, ignore=shutil.ignore_patterns(*excludes))
            else:
                copytree(site_packages_64, temp_package_path, metadata = False, symlinks=False)

        if egg_links:
            self.copy_editable_packages(egg_links, temp_package_path)