feat(lambda): python 3.9 runtime (aws#16366)

Add Python 3.9 to the list of supported runtimes. closes: aws#16144 , aws#16355 ---- *By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*
david-doyle-as24 · Sep 7, 2021 · 665d038 · 665d038
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diff --git a/packages/@aws-cdk/aws-lambda/README.md b/packages/@aws-cdk/aws-lambda/README.md
@@ -601,14 +601,14 @@ Example with Python:
 new Function(this, 'Function', {
   code: Code.fromAsset(path.join(__dirname, 'my-python-handler'), {
     bundling: {
-      image: Runtime.PYTHON_3_8.bundlingImage,
+      image: Runtime.PYTHON_3_9.bundlingImage,
       command: [
         'bash', '-c',
         'pip install -r requirements.txt -t /asset-output && cp -au . /asset-output'
       ],
     },
   }),
-  runtime: Runtime.PYTHON_3_8,
+  runtime: Runtime.PYTHON_3_9,
   handler: 'index.handler',
 });
 ```
@@ -632,7 +632,7 @@ new Function(this, 'Function', {
       command: ['my', 'cool', 'command'],
     },
   }),
-  runtime: Runtime.PYTHON_3_8,
+  runtime: Runtime.PYTHON_3_9,
   handler: 'index.handler',
 });
 ```

diff --git a/packages/@aws-cdk/aws-lambda/lib/runtime.ts b/packages/@aws-cdk/aws-lambda/lib/runtime.ts
@@ -108,6 +108,14 @@ export class Runtime {
     supportsCodeGuruProfiling: true,
   });
 
+  /**
+   * The Python 3.9 runtime (python3.9)
+   */
+  public static readonly PYTHON_3_9 = new Runtime('python3.9', RuntimeFamily.PYTHON, {
+    supportsInlineCode: true,
+    supportsCodeGuruProfiling: true,
+  });
+
   /**
    * The Java 8 runtime (java8)
    */

diff --git a/packages/@aws-cdk/aws-lambda/test/integ.runtime.inlinecode.expected.json b/packages/@aws-cdk/aws-lambda/test/integ.runtime.inlinecode.expected.json
@@ -300,6 +300,56 @@
         "PYTHON38ServiceRole3EA86BBE"
       ]
     },
+    "PYTHON39ServiceRole53E964DF": {
+      "Type": "AWS::IAM::Role",
+      "Properties": {
+        "AssumeRolePolicyDocument": {
+          "Statement": [
+            {
+              "Action": "sts:AssumeRole",
+              "Effect": "Allow",
+              "Principal": {
+                "Service": "lambda.amazonaws.com"
+              }
+            }
+          ],
+          "Version": "2012-10-17"
+        },
+        "ManagedPolicyArns": [
+          {
+            "Fn::Join": [
+              "",
+              [
+                "arn:",
+                {
+                  "Ref": "AWS::Partition"
+                },
+                ":iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
+              ]
+            ]
+          }
+        ]
+      }
+    },
+    "PYTHON39143BF976": {
+      "Type": "AWS::Lambda::Function",
+      "Properties": {
+        "Code": {
+          "ZipFile": "def handler(event, context):\n  return \"success\""
+        },
+        "Role": {
+          "Fn::GetAtt": [
+            "PYTHON39ServiceRole53E964DF",
+            "Arn"
+          ]
+        },
+        "Handler": "index.handler",
+        "Runtime": "python3.9"
+      },
+      "DependsOn": [
+        "PYTHON39ServiceRole53E964DF"
+      ]
+    },
     "NODEJS14XServiceRole4523ECDB": {
       "Type": "AWS::IAM::Role",
       "Properties": {
@@ -382,6 +432,11 @@
         "Ref": "PYTHON38A180AE47"
       }
     },
+    "PYTHON39functionName": {
+      "Value": {
+        "Ref": "PYTHON39143BF976"
+      }
+    },
     "NODEJS14XfunctionName": {
       "Value": {
         "Ref": "NODEJS14X930214A3"

diff --git a/packages/@aws-cdk/aws-lambda/test/integ.runtime.inlinecode.ts b/packages/@aws-cdk/aws-lambda/test/integ.runtime.inlinecode.ts
@@ -57,6 +57,13 @@ const python38 = new Function(stack, 'PYTHON_3_8', {
 });
 new CfnOutput(stack, 'PYTHON_3_8-functionName', { value: python38.functionName });
 
+const python39 = new Function(stack, 'PYTHON_3_9', {
+  code: new InlineCode('def handler(event, context):\n  return "success"'),
+  handler: 'index.handler',
+  runtime: Runtime.PYTHON_3_9,
+});
+new CfnOutput(stack, 'PYTHON_3_9-functionName', { value: python39.functionName });
+
 const node14xfn = new Function(stack, 'NODEJS_14_X', {
   code: new InlineCode('exports.handler = async function(event) { return "success" }'),
   handler: 'index.handler',