Add support for Python3.6 on AWS.

README.md

@@ -5,7 +5,7 @@
 
 [![npm](https://nodei.co/npm/serverless-python-requirements.png?downloads=true&downloadRank=true)](https://www.npmjs.com/package/serverless-python-requirements)
 
-A Serverless v1.0 plugin to automatically bundle dependencies from 
+A Serverless v1.0 plugin to automatically bundle dependencies from
 `requirements.txt` and make them available in your `PYTHONPATH`.
 
 
@@ -34,6 +34,7 @@ custom:
     dockerizePip: true
 ```
 
+
 ## Dealing with Lambda's size limitations
 To help deal with potentially large dependencies (for example: `numpy`, `scipy`
 and `scikit-learn`) there is support for compressing the libraries. This does
@@ -67,6 +68,21 @@ behind to speed things up on subsequent deploys. To clean them up, run
 `sls requirements clean`. You can also create them (and `unzip_requirements` if
 using zip support) manually with `sls requirements install`.
 
+
+## Updating to python 3.6
+
+This requires an update to your serverless.yml:
+
+```
+provider:
+  name: aws
+  runtime: python3.6
+```
+
+And be sure to clean up `.requirements` or `requirements.zip` if they exist as
+python2.7 and python3.6 code can't coexist.
+
+
 ## Credit
 This plugin is influenced by
 [serverless-wsgi](https://github.com/logandk/serverless-wsgi) from

index.js

@@ -33,12 +33,13 @@ class ServerlessPythonRequirements {
       return BbPromise.resolve();
     }
 
-    this.serverless.cli.log('Installing required Python packages...');
+    const runtime = this.serverless.service.provider.runtime;
+    this.serverless.cli.log(`Installing required Python packages for runtime ${runtime}...`);
 
     return new BbPromise((resolve, reject) => {
       let cmd, options;
       const pipCmd = [
-        'pip', '--isolated', 'install',
+        runtime, '-m', 'pip', '-v', '--isolated', 'install',
         '-t', '.requirements', '-r', 'requirements.txt',
       ];
       if (this.custom.dockerizePip) {
@@ -47,7 +48,7 @@ class ServerlessPythonRequirements {
           'run', '--rm',
           '-u', process.getuid() + ':' + process.getgid(),
           '-v', `${this.serverless.config.servicePath}:/var/task:z`,
-          'lambci/lambda:build-python2.7',
+          `lambci/lambda:build-${runtime}`,
         ];
         options.push(...pipCmd)
       } else {