Upgrade to python 3.8 (#564)

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     docker:
-    - image: python:3.7
+    - image: python:3.8
     steps:
     - checkout
     - restore_cache:
@@ -15,7 +15,7 @@ jobs:
     - run:
         name: Build
         command: |
-          python3.7 -m venv venv/
+          python3.8 -m venv venv/
           venv/bin/pip install --upgrade -r requirements.txt
     - run:
         name: PyTest with linters
@@ -26,7 +26,7 @@ jobs:
         key: python-packages-v1-{{ .Branch }}-{{ checksum "requirements.txt" }}-{{ checksum "constraints.txt" }}
   verify-generated-sql:
     docker:
-      - image: circleci/python:3.7
+      - image: circleci/python:3.8
     steps:
       - checkout
       - setup_remote_docker
@@ -34,7 +34,7 @@ jobs:
           name: Verify that all of generated SQL is committed
           command: |
             sudo apt-get update
-            python3.7 -m venv venv/
+            python3.8 -m venv venv/
             venv/bin/pip install --upgrade -r requirements.txt
             rm -rf sql/
             venv/bin/python script/generate_sql
@@ -43,7 +43,7 @@ jobs:
             test `git ls-files --other --modified -x sql/* | wc -l` = 0
   dry-run-sql:
     docker:
-      - image: python:3.7
+      - image: python:3.8
     steps:
       - checkout
       - run:

Dockerfile

@@ -1,4 +1,4 @@
-ARG PYTHON_VERSION=3.7
+ARG PYTHON_VERSION=3.8
 
 # build typed-ast in separate stage because it requires gcc and libc-dev
 FROM python:${PYTHON_VERSION}-slim

tests/README.md

@@ -5,7 +5,7 @@ This repository uses `pytest`:
 
 ```
 # create a venv
-python3.7 -m venv venv/
+python3.8 -m venv venv/
 
 # install requirements
 venv/bin/pip install -r requirements.txt