Very rudimentary Python support

Create a python environment.  Only supports GET; doesn't support any
parameters etc. yet.  Basically just enough for a hello world demo.

environments/python3/server.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+
+import imp
+from http.server import BaseHTTPRequestHandler, HTTPServer
+
+#
+# Load the file.
+#
+codepath = '/userfunc/user'
+userfunc = None
+
+class testHTTPServer_RequestHandler(BaseHTTPRequestHandler):
+    def do_POST(self):
+        global userfunc
+        userfunc = (imp.load_source('user', codepath)).main
+        self.send_response(200)
+        self.end_headers()
+        self.wfile.write(bytes("ok\n", "utf8"))
+        return
+
+    # GET
+    def do_GET(self):
+        global userfunc
+        try:
+            print("GET request")
+            message = userfunc(None)
+            self.send_response(200)
+            self.end_headers()
+            self.wfile.write(bytes(message, "utf8"))
+            return
+        except:
+            self.send_response(500)
+            self.end_headers()
+
+def run():
+    print('starting server...')
+    server_address = ('0.0.0.0', 8888)
+    httpd = HTTPServer(server_address, testHTTPServer_RequestHandler)
+    httpd.serve_forever()
+
+
+run()