[Other] Update example codes using download_model api (#486)

* update example codes using download_model api

* add resource files to repo

* add resource files to repo

* fix

* reduce unused lib

* fix

python/fastdeploy/download.py

@@ -245,5 +245,6 @@ def download_model(name: str,
                 except FileExistsError:
                     pass
         print('Successfully download model at path: {}'.format(fullpath))
+        return fullpath
     else:
         print('ERROR: Could not find a model named {}'.format(name))

python/fastdeploy/utils/__init__.py

@@ -11,4 +11,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 from .profile import profile
+from .example_resource import get_detection_test_image

python/fastdeploy/utils/example_resource.py

@@ -0,0 +1,24 @@
+# Copyright (c) 2022  PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import fastdeploy.download as download
+import fastdeploy.utils.hub_env as hubenv
+
+
+def get_detection_test_image(path=None):
+    if path is None:
+        path = hubenv.RESOURCE_HOME
+    fullpath = download.download(
+        url='https://bj.bcebos.com/paddlehub/fastdeploy/example/detection_test_image.jpg',
+        path=path)
+    return fullpath

python/fastdeploy/utils/hub_env.py

@@ -52,3 +52,4 @@ USER_HOME = _get_user_home()
 HUB_HOME = _get_hub_home()
 MODEL_HOME = _get_sub_home('models')
 CONF_HOME = _get_sub_home('conf')
+RESOURCE_HOME = _get_sub_home('resources')