update to use v1 client [(#1216)](GoogleCloudPlatform/python-docs-samples#1216)

* update to use v1 client

* set ensure_ascii=False

Author: dizcology

samples/snippets/classify_text/classify_text_tutorial.py

@@ -27,10 +27,7 @@
 import json
 import os
 
-from google.cloud import language_v1beta2
-from google.cloud.language_v1beta2 import enums
-from google.cloud.language_v1beta2 import types
-
+from google.cloud import language
 import numpy
 import six
 # [END classify_text_tutorial_import]
@@ -40,11 +37,11 @@
 def classify(text, verbose=True):
     """Classify the input text into categories. """
 
-    language_client = language_v1beta2.LanguageServiceClient()
+    language_client = language.LanguageServiceClient()
 
-    document = types.Document(
+    document = language.types.Document(
         content=text,
-        type=enums.Document.Type.PLAIN_TEXT)
+        type=language.enums.Document.Type.PLAIN_TEXT)
     response = language_client.classify_text(document)
     categories = response.categories
 
@@ -90,7 +87,7 @@ def index(path, index_file):
             print('Failed to process {}'.format(file_path))
 
     with io.open(index_file, 'w', encoding='utf-8') as f:
-        f.write(json.dumps(result))
+        f.write(json.dumps(result, ensure_ascii=False))
 
     print('Texts indexed in file: {}'.format(index_file))
     return result