Move import inside region tags [(#2211)](GoogleCloudPlatform/python-d…

…ocs-samples#2211)

* Move import inside region tags

* Update detect.py

samples/snippets/detect/detect.py

@@ -34,14 +34,14 @@
 """
 
 import argparse
-import io
 import re
 
 
 # [START vision_face_detection]
 def detect_faces(path):
     """Detects faces in an image."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_face_detection]
@@ -107,6 +107,7 @@ def detect_faces_uri(uri):
 def detect_labels(path):
     """Detects labels in the file."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_label_detection]
@@ -147,6 +148,7 @@ def detect_labels_uri(uri):
 def detect_landmarks(path):
     """Detects landmarks in the file."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_landmark_detection]
@@ -191,6 +193,7 @@ def detect_landmarks_uri(uri):
 def detect_logos(path):
     """Detects logos in the file."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_logo_detection]
@@ -231,6 +234,7 @@ def detect_logos_uri(uri):
 def detect_safe_search(path):
     """Detects unsafe features in the file."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_safe_search_detection]
@@ -285,6 +289,7 @@ def detect_safe_search_uri(uri):
 def detect_text(path):
     """Detects text in the file."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_text_detection]
@@ -335,6 +340,7 @@ def detect_text_uri(uri):
 def detect_properties(path):
     """Detects image properties in the file."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_image_properties]
@@ -383,6 +389,7 @@ def detect_properties_uri(uri):
 def detect_web(path):
     """Detects web annotations given an image."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_web_detection]
@@ -495,6 +502,7 @@ def web_entities_include_geo_results(path):
     """Detects web annotations given an image, using the geotag metadata
     in the image to detect web entities."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     with io.open(path, 'rb') as image_file:
@@ -543,6 +551,7 @@ def web_entities_include_geo_results_uri(uri):
 def detect_crop_hints(path):
     """Detects crop hints in an image."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_crop_hints]
@@ -597,6 +606,7 @@ def detect_crop_hints_uri(uri):
 def detect_document(path):
     """Detects document features in an image."""
     from google.cloud import vision
+    import io
     client = vision.ImageAnnotatorClient()
 
     # [START vision_python_migration_document_text_detection]