Raise the minimum supported Python version to 3.11

.circleci/config.yml

@@ -11,7 +11,7 @@ orbs:
 
 defaults: &defaults
   docker:
-    - image: cimg/python:3.10.0
+    - image: cimg/python:3.11.7
   working_directory: ~/project
 
 prepare_tox: &prepare_tox
@@ -42,31 +42,18 @@ jobs:
   # Test matrix
   # ------------------------
 
-  test_feature_engine_py39:
+  test_feature_engine_py311:
     docker:
-      - image: cimg/python:3.9.0
-    working_directory: ~/project
-    steps:
-      - checkout:
-          path: ~/project
-      - *prepare_tox
-      - run:
-          name: Run tests (Python 3.9)
-          command: |
-            tox -e py39
-
-  test_feature_engine_py310:
-    docker:
-      - image: cimg/python:3.10.0
+      - image: cimg/python:3.11.7
     working_directory: ~/project
     steps:
       - checkout:
           path: ~/project
       - *prepare_tox
       - run:
-          name: Run tests (Python 3.10)
+          name: Run tests (Python 3.11)
           command: |
-            tox -e py310
+            tox -e py311
 
   test_feature_engine_py311_sklearn150:
     docker:
@@ -166,7 +153,7 @@ jobs:
 
   test_style:
     docker:
-      - image: cimg/python:3.10.0
+      - image: cimg/python:3.11.7
     working_directory: ~/project
     steps:
       - checkout:
@@ -179,7 +166,7 @@ jobs:
 
   test_docs:
     docker:
-      - image: cimg/python:3.10.0
+      - image: cimg/python:3.11.7
     working_directory: ~/project
     steps:
       - checkout:
@@ -192,7 +179,7 @@ jobs:
 
   test_type:
     docker:
-      - image: cimg/python:3.10.0
+      - image: cimg/python:3.11.7
     working_directory: ~/project
     steps:
       - checkout:
@@ -277,8 +264,7 @@ workflows:
 
   test-all:
     jobs:
-      - test_feature_engine_py39
-      - test_feature_engine_py310
+      - test_feature_engine_py311
       - test_feature_engine_py311_sklearn150
       - test_feature_engine_py311_sklearn160
       - test_feature_engine_py311_sklearn170
@@ -298,8 +284,7 @@ workflows:
 
       - package_and_upload_to_pypi:
           requires:
-            - test_feature_engine_py39
-            - test_feature_engine_py310
+            - test_feature_engine_py311
             - test_feature_engine_py311_sklearn150
             - test_feature_engine_py311_sklearn160
             - test_feature_engine_py311_sklearn170

.github/workflow/workflow.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       OS: ubuntu-latest
-      PYTHON: '3.9'
+      PYTHON: '3.11'
     steps:
     - uses: checkout@v3
       with:
@@ -14,7 +14,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@master
       with:
-        python-version: 3.9
+        python-version: "3.11"
     - name: Generate Report
       run: |
         pip install coverage

docs/contribute/contribute_code.rst

@@ -433,7 +433,7 @@ If the tests pass, the code is in optimal condition :)
 
 **A few things to note:**
 
-Tox runs our tests in Python versions 3.6, 3.7, 3.8 and 3.9. However, it will only be able to
+Tox runs our tests in Python versions 3.11, 3.12, 3.13 and 3.14. However, it will only be able to
 run the tests in the version you have installed locally. All others will fail. This is OK.
 As long as the tests in the Python version you have installed pass, you are good to go.
 

docs/index.rst

@@ -127,7 +127,7 @@ The following characteristics make feature-engine unique:
 Installation
 ------------
 
-Feature-engine is a Python 3 package and works well with 3.9 or later.
+Feature-engine is a Python 3 package and works well with 3.11 or later.
 
 The simplest way to install feature-engine is from PyPI with pip:
 

docs/quickstart/index.rst

@@ -12,7 +12,7 @@ data and then modify the data. They work just like any scikit-learn transformer.
 Installation
 ------------
 
-Feature-engine is a Python 3 package and works well with 3.9 or later. You can install
+Feature-engine is a Python 3 package and works well with 3.11 or later. You can install
 feature-engine with `pip`:
 
 .. code-block:: bash

docs/whats_new/index.rst

@@ -8,6 +8,7 @@ Find out what's new in each new version release.
 .. toctree::
    :maxdepth: 2
 
+   unreleased
    v_190
    v_180
    v_170

docs/whats_new/unreleased.rst

@@ -0,0 +1,9 @@
+Unreleased
+==========
+
+Compatibility
+-------------
+
+- The minimum supported Python version is now 3.11. Python 3.9 and 3.10 are no
+  longer supported. Upgrade Python before installing this release. Existing
+  Feature-engine releases retain their original Python requirements.

pyproject.toml

@@ -10,7 +10,7 @@ license = {text = "BSD 3 clause"}
 authors = [
     { name = "Soledad Galli", email = "solegalli@protonmail.com" }
 ]
-requires-python = ">=3.9.0"
+requires-python = ">=3.11"
 dependencies = [
     "numpy>=1.18.2",
     "pandas>=2.2.0",
@@ -20,8 +20,6 @@ dependencies = [
 
 classifiers = [
     "License :: OSI Approved :: BSD License",
-    "Programming Language :: Python :: 3.9",
-    "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",

tox.ini

@@ -1,7 +1,6 @@
 [tox]
 envlist =
-    py39
-    py310
+    py311
     py311-sklearn150
     py311-sklearn160
     py311-sklearn170
@@ -32,11 +31,7 @@ commands =
 # Python versions
 # -------------------------
 
-[testenv:py39]
-deps =
-    .[tests]
-
-[testenv:py310]
+[testenv:py311]
 deps =
     .[tests]