[python] Start supporting Python 3.10 (#4893)

* Update setup.py

* Update cuda.yml

* Update static_analysis.yml

* Update linkchecker.yml

* Update .appveyor.yml

* Update .vsts-ci.yml

* Update python_package.yml

* Update .vsts-ci.yml

* Update python_package.yml

* Update cuda.yml

* Update static_analysis.yml

* Update linkchecker.yml

* Update .vsts-ci.yml

* Update .appveyor.yml

* re-arange Python version

.appveyor.yml

@@ -27,10 +27,7 @@ install:
   - set PYTHON_VERSION=%CONFIGURATION%
   - set CONDA_ENV="test-env"
   - ps: |
-      switch ($env:PYTHON_VERSION) {
-          "3.7" {$env:MINICONDA = "C:\Miniconda37-x64"}
-          default {$env:MINICONDA = "C:\Miniconda37-x64"}
-      }
+      $env:MINICONDA = "C:\Miniconda3-x64"
       $env:PATH = "$env:MINICONDA;$env:MINICONDA\Scripts;$env:PATH"
       $env:BUILD_SOURCESDIRECTORY = "$env:APPVEYOR_BUILD_FOLDER"
       $env:LGB_VER = (Get-Content $env:APPVEYOR_BUILD_FOLDER\VERSION.txt).trim()

.github/workflows/cuda.yml

@@ -25,15 +25,15 @@ jobs:
         include:
           - method: source
             compiler: gcc
-            python_version: 3.7
+            python_version: "3.8"
             cuda_version: "11.5.1"
           - method: pip
             compiler: clang
-            python_version: 3.8
+            python_version: "3.9"
             cuda_version: "10.0"
           - method: wheel
             compiler: gcc
-            python_version: 3.9
+            python_version: "3.10"
             cuda_version: "9.0"
     steps:
       - name: Setup or update software on host machine

.github/workflows/linkchecker.yml

@@ -11,7 +11,7 @@ env:
   CONDA_ENV: test-env
   GITHUB_ACTIONS: 'true'
   OS_NAME: 'linux'
-  PYTHON_VERSION: 3.9
+  PYTHON_VERSION: '3.10'
   TASK: 'check-links'
 
 jobs:

.github/workflows/python_package.yml

@@ -23,28 +23,28 @@ jobs:
         include:
           - os: macOS-latest
             task: regular
-            python_version: 3.8
+            python_version: '3.8'
           - os: macOS-latest
             task: sdist
-            python_version: 3.9
+            python_version: '3.9'
           - os: macOS-latest
             task: bdist
-            python_version: 3.8
+            python_version: '3.7'
           - os: macOS-latest
             task: if-else
-            python_version: 3.8
+            python_version: '3.8'
           - os: macOS-latest
             task: mpi
             method: source
-            python_version: 3.9
+            python_version: '3.9'
           - os: macOS-latest
             task: mpi
             method: pip
-            python_version: 3.9
+            python_version: '3.10'
           - os: macOS-latest
             task: mpi
             method: wheel
-            python_version: 3.7
+            python_version: '3.7'
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2.4.0

.github/workflows/static_analysis.yml

@@ -15,7 +15,7 @@ env:
   CONDA_ENV: test-env
   GITHUB_ACTIONS: 'true'
   OS_NAME: 'linux'
-  PYTHON_VERSION: 3.9
+  PYTHON_VERSION: '3.10'
 
 jobs:
   test:

.vsts-ci.yml

@@ -9,7 +9,7 @@ pr:
 - master
 variables:
   AZURE: 'true'
-  PYTHON_VERSION: 3.9
+  PYTHON_VERSION: '3.10'
   CONDA_ENV: test-env
 resources:
   containers:
@@ -35,9 +35,10 @@ jobs:
     matrix:
       regular:
         TASK: regular
+        PYTHON_VERSION: '3.9'
       sdist:
         TASK: sdist
-        PYTHON_VERSION: 3.7
+        PYTHON_VERSION: '3.7'
       bdist:
         TASK: bdist
       inference:
@@ -45,7 +46,7 @@ jobs:
       mpi_source:
         TASK: mpi
         METHOD: source
-        PYTHON_VERSION: 3.8
+        PYTHON_VERSION: '3.8'
       gpu_source:
         TASK: gpu
         METHOD: source
@@ -94,7 +95,7 @@ jobs:
         TASK: sdist
       bdist:
         TASK: bdist
-        PYTHON_VERSION: 3.8
+        PYTHON_VERSION: '3.8'
       inference:
         TASK: if-else
       mpi_source:
@@ -103,21 +104,23 @@ jobs:
       mpi_pip:
         TASK: mpi
         METHOD: pip
-        PYTHON_VERSION: 3.8
+        PYTHON_VERSION: '3.9'
       mpi_wheel:
         TASK: mpi
         METHOD: wheel
-        PYTHON_VERSION: 3.7
+        PYTHON_VERSION: '3.7'
       gpu_source:
         TASK: gpu
         METHOD: source
+        PYTHON_VERSION: '3.9'
       gpu_pip:
         TASK: gpu
         METHOD: pip
+        PYTHON_VERSION: '3.8'
       gpu_wheel:
         TASK: gpu
         METHOD: wheel
-        PYTHON_VERSION: 3.7
+        PYTHON_VERSION: '3.7'
       cpp_tests:
         TASK: cpp-tests
         METHOD: with-sanitizers
@@ -223,10 +226,10 @@ jobs:
     matrix:
       regular:
         TASK: regular
-        PYTHON_VERSION: 3.7
+        PYTHON_VERSION: '3.7'
       sdist:
         TASK: sdist
-        PYTHON_VERSION: 3.8
+        PYTHON_VERSION: '3.8'
       bdist:
         TASK: bdist
       swig:
@@ -263,9 +266,10 @@ jobs:
     matrix:
       regular:
         TASK: regular
+        PYTHON_VERSION: '3.9'
       sdist:
         TASK: sdist
-        PYTHON_VERSION: 3.8
+        PYTHON_VERSION: '3.8'
       bdist:
         TASK: bdist
       swig:

python-package/setup.py

@@ -380,4 +380,5 @@ if __name__ == "__main__":
                        'Programming Language :: Python :: 3.7',
                        'Programming Language :: Python :: 3.8',
                        'Programming Language :: Python :: 3.9',
+                       'Programming Language :: Python :: 3.10',
                        'Topic :: Scientific/Engineering :: Artificial Intelligence'])