Changed crystal template, picked latest flask one

template/python3-flask/function/handler.py

@@ -0,0 +1,7 @@
+def handle(req):
+    """handle a request to the function
+    Args:
+        req (str): request body
+    """
+
+    return req

template/python3-flask/function/handler_test.py

@@ -0,0 +1,10 @@
+from .handler import handle
+
+# Test your handler here
+
+# To disable testing, you can set the build_arg `TEST_ENABLED=false` on the CLI or in your stack.yml
+# https://docs.openfaas.com/reference/yaml/#function-build-args-build-args
+
+def test_handle():
+    # assert handle("input") == "input"
+    pass

template/python3-flask/function/tox.ini

@@ -0,0 +1,41 @@
+# If you would like to disable
+# automated testing during faas-cli build,
+
+# Replace the content of this file with
+#   [tox]
+#   skipsdist = true
+
+# You can also edit, remove, or add additional test steps
+# by editing, removing, or adding new testenv sections
+
+
+# find out more about tox: https://tox.readthedocs.io/en/latest/
+[tox]
+envlist = lint,test
+skipsdist = true
+
+[testenv:test]
+deps =
+  flask
+  pytest
+  -rrequirements.txt
+commands =
+  # run unit tests with pytest
+  # https://docs.pytest.org/en/stable/
+  # configure by adding a pytest.ini to your handler
+  pytest
+
+[testenv:lint]
+deps =
+  flake8
+commands =
+  flake8 .
+
+[flake8]
+count = true
+max-line-length = 127
+max-complexity = 10
+statistics = true
+# stop the build if there are Python syntax errors or undefined names
+select = E9,F63,F7,F82
+show-source = true