swap fetch_page() for fetch() OR visits are never empty refactor

Author: wescpy

step0-webapp2-gaendb-py2/main.py

@@ -26,7 +26,7 @@ def store_visit(remote_addr, user_agent):
 
 def fetch_visits(limit):
     return (v.to_dict() for v in Visit.query().order(
-        -Visit.timestamp).fetch_page(limit)[0])
+            -Visit.timestamp).fetch(limit))
 
 class MainHandler(webapp2.RequestHandler):
     def get(self):

step1-flask-gaendb-py2/main.py

@@ -26,7 +26,7 @@ def store_visit(remote_addr, user_agent):
 
 def fetch_visits(limit):
     return (v.to_dict() for v in Visit.query().order(
-        -Visit.timestamp).fetch_page(limit)[0])
+            -Visit.timestamp).fetch(limit))
 
 @app.route('/')
 def root():

step2-flask-cloudndb-py2/main.py

@@ -29,7 +29,7 @@ def store_visit(remote_addr, user_agent):
 def fetch_visits(limit):
     with ds_client.context():
         return (v.to_dict() for v in Visit.query().order(
-                -Visit.timestamp).fetch_page(limit)[0])
+                -Visit.timestamp).fetch(limit))
 
 @app.route('/')
 def root():

step2-flask-cloudndb-py3/main.py

@@ -29,7 +29,7 @@ def store_visit(remote_addr, user_agent):
 def fetch_visits(limit):
     with ds_client.context():
         return (v.to_dict() for v in Visit.query().order(
-                -Visit.timestamp).fetch_page(limit)[0])
+                -Visit.timestamp).fetch(limit))
 
 @app.route('/')
 def root():

step4-cloudds-cloudrun-py3/main.py

@@ -35,7 +35,7 @@ def fetch_visits(limit):
 @app.route('/')
 def root():
     store_visit(request.remote_addr, request.user_agent)
-    visits = fetch_visits(10) or ()  # empty sequence if None
+    visits = fetch_visits(10)
     return render_template('index.html', visits=visits)
 
 if __name__ == '__main__':

step4-cloudndb-cloudrun-py2/main.py

@@ -34,7 +34,7 @@ def fetch_visits(limit):
 @app.route('/')
 def root():
     store_visit(request.remote_addr, request.user_agent)
-    visits = fetch_visits(10) or ()  # empty sequence if None
+    visits = fetch_visits(10)
     return render_template('index.html', visits=visits)
 
 if __name__ == '__main__':

step4a-cloudrun-bldpks-py3/main.py

@@ -35,7 +35,7 @@ def fetch_visits(limit):
 @app.route('/')
 def root():
     store_visit(request.remote_addr, request.user_agent)
-    visits = fetch_visits(10) or ()  # empty sequence if None
+    visits = fetch_visits(10)
     return render_template('index.html', visits=visits)
 
 if __name__ == '__main__':