fixing comments

.github/workflows/test-python.yml

@@ -196,7 +196,8 @@ jobs:
           }
           $pythonVersion
         shell: pwsh
-  setup-python-multiple-versions:
+
+  setup-python-multiple-python-versions:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -207,13 +208,17 @@ jobs:
       - name: Setup Python and check latest
         uses: ./
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: |
+              3.7
+              3.8
+              3.9
+              3.10
           check-latest: true
       - name: Validate version
         run: |
           $pythonVersion = (python --version)
-          if ("$pythonVersion" -NotMatch "${{ matrix.python-version }}"){
-            Write-Host "The current version is $pythonVersion; expected version is ${{ matrix.python-version }}"
+          if ("$pythonVersion" -NotMatch "3.10"){
+            Write-Host "The current version is $pythonVersion; expected version is 3.10"
             exit 1
           }
           $pythonVersion

dist/setup/index.js

@@ -66867,31 +66867,31 @@ function cacheDependencies(cache, pythonVersion) {
     });
 }
 function resolveVersionInput() {
-    let version = core.getMultilineInput('python-version');
+    let versions = core.getMultilineInput('python-version');
     let versionFile = core.getInput('python-version-file');
-    if (version.length && versionFile) {
+    if (versions.length && versionFile) {
         core.warning('Both python-version and python-version-file inputs are specified, only python-version will be used.');
     }
-    if (version.length) {
-        return version;
+    if (versions.length) {
+        return versions;
     }
     if (versionFile) {
         if (!fs_1.default.existsSync(versionFile)) {
             throw new Error(`The specified python version file at: ${versionFile} doesn't exist.`);
         }
-        version = fs_1.default.readFileSync(versionFile, 'utf8');
+        const version = fs_1.default.readFileSync(versionFile, 'utf8');
         core.info(`Resolved ${versionFile} as ${version}`);
-        return version;
+        return [version];
     }
     utils_1.logWarning("Neither 'python-version' nor 'python-version-file' inputs were supplied. Attempting to find '.python-version' file.");
     versionFile = '.python-version';
     if (fs_1.default.existsSync(versionFile)) {
-        version = fs_1.default.readFileSync(versionFile, 'utf8');
+        const version = fs_1.default.readFileSync(versionFile, 'utf8');
         core.info(`Resolved ${versionFile} as ${version}`);
-        return version;
+        return [version];
     }
     utils_1.logWarning(`${versionFile} doesn't exist.`);
-    return version;
+    return versions;
 }
 function run() {
     var _a;
@@ -66904,20 +66904,13 @@ function run() {
         }
         core.debug(`Python is expected to be installed into ${process.env['RUNNER_TOOL_CACHE']}`);
         try {
-            let versions;
-            const resolvedVersionInput = resolveVersionInput();
+            const versions = resolveVersionInput();
             const checkLatest = core.getBooleanInput('check-latest');
-            if (Array.isArray(resolvedVersionInput)) {
-                versions = resolvedVersionInput;
-            }
-            else {
-                versions = [resolvedVersionInput];
-            }
             if (versions.length) {
                 let pythonVersion = '';
+                const arch = core.getInput('architecture') || os.arch();
+                const updateEnvironment = core.getBooleanInput('update-environment');
                 for (const version of versions) {
-                    const arch = core.getInput('architecture') || os.arch();
-                    const updateEnvironment = core.getBooleanInput('update-environment');
                     if (isPyPyVersion(version)) {
                         const installed = yield finderPyPy.findPyPyVersion(version, arch, updateEnvironment, checkLatest);
                         pythonVersion = `${installed.resolvedPyPyVersion}-${installed.resolvedPythonVersion}`;

docs/advanced-usage.md

@@ -2,6 +2,7 @@
 - [Using the python-version input](advanced-usage.md#using-the-python-version-input)
     - [Specifying a Python version](advanced-usage.md#specifying-a-python-version)
     - [Specifying a PyPy version](advanced-usage.md#specifying-a-pypy-version)
+    - [Specifying multiple Python and PyPy versions](advanced-usage.md#specifying-multiple-python/pypy-version)
     - [Matrix Testing](advanced-usage.md#matrix-testing)
 - [Using the python-version-file input](advanced-usage.md#using-the-python-version-file-input)
 - [Check latest version](advanced-usage.md#check-latest-version)
@@ -132,6 +133,62 @@ jobs:
 ```
 More details on PyPy syntax can be found in the [Available versions of PyPy](#pypy) section.
 
+### Specifying multiple Python/PyPy version
+The python-version input can get multiple python/pypy versions. The last specified version will be used as a default one. 
+
+Download and set up multiple Python versions:
+
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
+      with:
+        python-version: |
+            3.8
+            3.9
+            3.10
+    - run: python my_script.py
+```
+
+Download and set up multiple PyPy versions:
+
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
+      with:
+        python-version: |
+            pypy-3.7-v7.3.x
+            pypy3.9-nightly
+            pypy3.8
+    - run: python my_script.py
+```
+
+Download and set up multiple Python/PyPy versions:
+
+```yaml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
+      with:
+        python-version: |
+            3.8
+            3.9
+            pypy3.9-nightly
+            pypy3.8
+            3.10
+    - run: python my_script.py
+```
+
 ### Matrix Testing
 
 Using `setup-python` it's possible to use [matrix syntax](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstrategymatrix) to install several versions of Python or PyPy:

src/setup-python.ts

@@ -22,18 +22,18 @@ async function cacheDependencies(cache: string, pythonVersion: string) {
   await cacheDistributor.restoreCache();
 }
 
-function resolveVersionInput(): string | string[] {
-  let version: string | string[] = core.getMultilineInput('python-version');
+function resolveVersionInput() {
+  let versions = core.getMultilineInput('python-version');
   let versionFile = core.getInput('python-version-file');
 
-  if (version.length && versionFile) {
+  if (versions.length && versionFile) {
     core.warning(
       'Both python-version and python-version-file inputs are specified, only python-version will be used.'
     );
   }
 
-  if (version.length) {
-    return version;
+  if (versions.length) {
+    return versions;
   }
 
   if (versionFile) {
@@ -42,9 +42,9 @@ function resolveVersionInput(): string | string[] {
         `The specified python version file at: ${versionFile} doesn't exist.`
       );
     }
-    version = fs.readFileSync(versionFile, 'utf8');
+    const version = fs.readFileSync(versionFile, 'utf8');
     core.info(`Resolved ${versionFile} as ${version}`);
-    return version;
+    return [version];
   }
 
   logWarning(
@@ -52,14 +52,14 @@ function resolveVersionInput(): string | string[] {
   );
   versionFile = '.python-version';
   if (fs.existsSync(versionFile)) {
-    version = fs.readFileSync(versionFile, 'utf8');
+    const version = fs.readFileSync(versionFile, 'utf8');
     core.info(`Resolved ${versionFile} as ${version}`);
-    return version;
+    return [version];
   }
 
   logWarning(`${versionFile} doesn't exist.`);
 
-  return version;
+  return versions;
 }
 
 async function run() {
@@ -75,21 +75,14 @@ async function run() {
     `Python is expected to be installed into ${process.env['RUNNER_TOOL_CACHE']}`
   );
   try {
-    let versions: string[];
-    const resolvedVersionInput = resolveVersionInput();
+    const versions = resolveVersionInput();
     const checkLatest = core.getBooleanInput('check-latest');
 
-    if (Array.isArray(resolvedVersionInput)) {
-      versions = resolvedVersionInput as string[];
-    } else {
-      versions = [resolvedVersionInput as string];
-    }
-
     if (versions.length) {
       let pythonVersion = '';
+      const arch: string = core.getInput('architecture') || os.arch();
+      const updateEnvironment = core.getBooleanInput('update-environment');
       for (const version of versions) {
-        const arch: string = core.getInput('architecture') || os.arch();
-        const updateEnvironment = core.getBooleanInput('update-environment');
         if (isPyPyVersion(version)) {
           const installed = await finderPyPy.findPyPyVersion(
             version,