Add Python code sample for Cloud Functions + Memorystore for Redis

[ghost]

I adapted the existing sample from https://cloud.google.com/memorystore/docs/redis/connect-redis-instance-flex.

[grant]

Can we at least create a README guide on how to start this script/service?

[engelke]

LGTM

[gguuss]

Looks like lint is failing:

./main.py:24:1: E302 expected 2 blank lines, found 1
def visit_count(request):
^
./main.py:25:3: E111 indentation is not a multiple of four
  value = redis_client.incr('visits', 1)
  ^
./main.py:26:3: E111 indentation is not a multiple of four
  return 'Visit count: {}'.format(value)
  ^
nox > Command flake8 --show-source --builtin gettext --max-complexity 20 --import-order-style google --exclude .nox,.cache,env,lib,generated_pb2,*_pb2.py,*_pb2_grpc.py --ignore=E121,E123,E126,E226,E24,E704,W503,W504,I100,I201,I202 --application-import-names main . failed with exit code 1
nox > Session lint(sample='./functions/memorystore/redis') failed.
The command "./scripts/travis.sh" exited with 1.

[ghost]

Fixed lint issues, and I can add a README that links to the tutorial for this sample once the tutorial goes live.

[gguuss]

LGTM

[gguuss]

It's probably still a good idea to generate the README by defining readme.rst.in example and calling the Readme-gen script.

[ghost]

@gguuss That template doesn't look like it applies here. The main.py file is not a script you run locally like that. I would use a simple README.md like the rest of the functions samples do.

[gguuss]

@gguuss That template doesn't look like it applies here. The main.py file is not a script you run locally like that. I would use a simple README.md like the rest of the functions samples do.

Ack. I can see about adding it for you after you merge.