Dropped support for Python 3.7 (#7623)

.changes/unreleased/Breaking Changes-20230515-053148.yaml

@@ -0,0 +1,6 @@
+kind: Breaking Changes
+body: Dropped support for Python 3.7
+time: 2023-05-15T05:31:48.375649+02:00
+custom:
+  Author: sdebruyn
+  Issue: "7082"

.github/workflows/main.yml

@@ -69,7 +69,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     env:
       TOXENV: "unit"
@@ -116,7 +116,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
         os: [ubuntu-20.04]
         include:
           - python-version: 3.8

CONTRIBUTING.md

@@ -56,7 +56,7 @@ There are some tools that will be helpful to you in developing locally. While th
 
 These are the tools used in `dbt-core` development and testing:
 
-- [`tox`](https://tox.readthedocs.io/en/latest/) to manage virtualenvs across python versions. We currently target the latest patch releases for Python 3.7, 3.8, 3.9, 3.10 and 3.11
+- [`tox`](https://tox.readthedocs.io/en/latest/) to manage virtualenvs across python versions. We currently target the latest patch releases for Python 3.8, 3.9, 3.10 and 3.11
 - [`pytest`](https://docs.pytest.org/en/latest/) to define, discover, and run tests
 - [`flake8`](https://flake8.pycqa.org/en/latest/) for code linting
 - [`black`](https://github.com/psf/black) for code formatting
@@ -163,7 +163,7 @@ suites.
 
 #### `tox`
 
-[`tox`](https://tox.readthedocs.io/en/latest/) takes care of managing virtualenvs and install dependencies in order to run tests. You can also run tests in parallel, for example, you can run unit tests for Python 3.7, Python 3.8, Python 3.9, Python 3.10 and Python 3.11 checks in parallel with `tox -p`. Also, you can run unit tests for specific python versions with `tox -e py37`. The configuration for these tests in located in `tox.ini`.
+[`tox`](https://tox.readthedocs.io/en/latest/) takes care of managing virtualenvs and install dependencies in order to run tests. You can also run tests in parallel, for example, you can run unit tests for Python 3.8, Python 3.9, Python 3.10 and Python 3.11 checks in parallel with `tox -p`. Also, you can run unit tests for specific python versions with `tox -e py38`. The configuration for these tests in located in `tox.ini`.
 
 #### `pytest`
 

Dockerfile.test

@@ -33,13 +33,6 @@ RUN apt-get update \
     python \
     python-dev \
     python3-pip \
-    python3.6 \
-    python3.6-dev \
-    python3-pip \
-    python3.6-venv \
-    python3.7 \
-    python3.7-dev \
-    python3.7-venv \
     python3.8 \
     python3.8-dev \
     python3.8-venv \

core/setup.py

@@ -2,9 +2,9 @@
 import os
 import sys
 
-if sys.version_info < (3, 7, 2):
+if sys.version_info < (3, 8):
     print("Error: dbt does not support this version of Python.")
-    print("Please upgrade to Python 3.7.2 or higher.")
+    print("Please upgrade to Python 3.8 or higher.")
     sys.exit(1)
 
 
@@ -55,8 +55,7 @@
         "logbook>=1.5,<1.6",
         "mashumaro[msgpack]==3.6",
         "minimal-snowplow-tracker==0.0.2",
-        "networkx>=2.3,<2.8.1;python_version<'3.8'",
-        "networkx>=2.3,<3;python_version>='3.8'",
+        "networkx>=2.3,<3",
         "packaging>20.9",
         "sqlparse>=0.2.3,<0.4.4",
         "dbt-extractor~=0.4.1",
@@ -79,11 +78,10 @@
         "Operating System :: Microsoft :: Windows",
         "Operating System :: MacOS :: MacOS X",
         "Operating System :: POSIX :: Linux",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
     ],
-    python_requires=">=3.7.2",
+    python_requires=">=3.8",
 )

plugins/postgres/setup.py

@@ -2,9 +2,9 @@
 import os
 import sys
 
-if sys.version_info < (3, 7):
+if sys.version_info < (3, 8):
     print("Error: dbt does not support this version of Python.")
-    print("Please upgrade to Python 3.7 or higher.")
+    print("Please upgrade to Python 3.8 or higher.")
     sys.exit(1)
 
 
@@ -79,11 +79,10 @@ def _dbt_psycopg2_name():
         "Operating System :: Microsoft :: Windows",
         "Operating System :: MacOS :: MacOS X",
         "Operating System :: POSIX :: Linux",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
     ],
-    python_requires=">=3.7",
+    python_requires=">=3.8",
 )

tests/adapter/setup.py

@@ -2,9 +2,9 @@
 import os
 import sys
 
-if sys.version_info < (3, 7):
+if sys.version_info < (3, 8):
     print("Error: dbt does not support this version of Python.")
-    print("Please upgrade to Python 3.7 or higher.")
+    print("Please upgrade to Python 3.8 or higher.")
     sys.exit(1)
 
 
@@ -48,9 +48,10 @@
         "Operating System :: Microsoft :: Windows",
         "Operating System :: MacOS :: MacOS X",
         "Operating System :: POSIX :: Linux",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
     ],
-    python_requires=">=3.7",
+    python_requires=">=3.8",
 )

tox.ini

@@ -2,7 +2,7 @@
 skipsdist = True
 envlist = unit,integration
 
-[testenv:{unit,py37,py38,py39,py310,py311,py}]
+[testenv:{unit,py38,py39,py310,py311,py}]
 description = unit testing
 download = true
 skip_install = true
@@ -16,7 +16,7 @@ deps =
   -rdev-requirements.txt
   -reditable-requirements.txt
 
-[testenv:{integration,py37-integration,py38-integration,py39-integration,py310-integration,py311-integration,py-integration}]
+[testenv:{integration,py38-integration,py39-integration,py310-integration,py311-integration,py-integration}]
 description = functional testing
 download = true
 skip_install = true