Add PYTHON37

Author: alexcombessie

code-env/python/desc.json

@@ -1,8 +1,9 @@
 {
     "acceptedPythonInterpreters": [
-        "PYTHON36"
+        "PYTHON36",
+        "PYTHON37"
     ],
     "forceConda": false,
     "installCorePackages": true,
     "installJupyterSupport": false
-}
+}