Add Python-3.10 (build and test) (#5420)

* Add Python-3.10 (build and test)

* Fix functional.adjust_gamma
Co-authored-by: Vasilis Vryniotis <datumbox@users.noreply.github.com>
Co-authored-by: Joao Gomes <joaopsgomes@gmail.com>

.circleci/regenerate.py

@@ -21,7 +21,7 @@ import yaml
 from jinja2 import select_autoescape
 
 
-PYTHON_VERSIONS = ["3.7", "3.8", "3.9"]
+PYTHON_VERSIONS = ["3.7", "3.8", "3.9", "3.10"]
 
 RC_PATTERN = r"/v[0-9]+(\.[0-9]+)*-rc[0-9]+/"
 

packaging/pkg_helpers.bash

@@ -205,6 +205,7 @@ setup_wheel_python() {
       3.7) python_abi=cp37-cp37m ;;
       3.8) python_abi=cp38-cp38 ;;
       3.9) python_abi=cp39-cp39 ;;
+      3.10) python_abi=cp310-cp310 ;;
       *)
         echo "Unrecognized PYTHON_VERSION=$PYTHON_VERSION"
         exit 1