Update flask

flask/files/.platform.app.yaml

@@ -7,13 +7,17 @@
 name: app
 
 # The runtime the application uses.
-type: "python:2.7"
+type: "python:3.7"
 
+# The build-time dependencies of the app.
+dependencies:
+    python:
+        pipenv: "2018.10.13"
 
 # The hooks executed at various points in the lifecycle of the application.
 hooks:
     build: |
-      pip install -r requirements.txt
+      pipenv install --system --deploy
 
 # The size of the persistent disk of the application (in MB).
 disk: 1024

flask/files/Pipfile

@@ -0,0 +1,15 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+flask = "*"
+redis = "*"
+pymysql = "*"
+gevent = "*"
+
+[dev-packages]
+
+[requires]
+python_version = "3.7"

flask/files/README.md

@@ -1,4 +1,4 @@
-# Platform.sh Python 2.7 Flask minimal example
+# Platform.sh Python 3.7 Flask minimal example
 
 This project provides a starter kit for minimal Python 2.7 Flask projects hosted on Platform.sh. It is primarily an example, although could be used as the starting point for a real project.
 

flask/files/server.py

@@ -7,7 +7,7 @@
 
 import flask
 import flask.json
-import gevent.wsgi
+import gevent.pywsgi
 import pymysql
 import redis
 
@@ -64,12 +64,12 @@ def test_redis(instance):
         db=0,
     )
     key_name = "foo-%s" + str(uuid.uuid4())
-    value = "bar"
+    value = b"bar"
 
     r.set(key_name, "bar")
     assert value == r.get(key_name)
 
 
 if __name__ == "__main__":
-    http_server = gevent.wsgi.WSGIServer(('127.0.0.1', int(os.environ["PORT"])), app)
+    http_server = gevent.pywsgi.WSGIServer(('127.0.0.1', int(os.environ["PORT"])), app)
     http_server.serve_forever()