Fix usage of imp module in newer Python versions.

project/settings.py

@@ -1,9 +1,19 @@
-import imp
 import os
+import sys
 import yaml
 
 import django
 
+if sys.version_info[:2] >= (3, 4):
+    import importlib
+    find_module = lambda c: importlib.machinery.PathFinder.find_spec(c)
+elif sys.version_info[:2] >= (3, 1):
+    import importlib
+    find_module = lambda c: importlib.machinery.PathFinder.find_module(c)
+else:
+    import imp
+    find_module = lambda c: imp.find_module(c)
+
 # Path to here is something like
 # .../<repo>/<project_name>/settings.py
 PROJECT_DIR = os.path.abspath(os.path.dirname(__file__))
@@ -241,7 +251,7 @@
 if MAPIT_COUNTRY:
     try:
         c = 'mapit_%s' % MAPIT_COUNTRY.lower()
-        imp.find_module(c)
+        find_module(c)
         # Put before 'mapit', so country templates take precedence
         INSTALLED_APPS.insert(INSTALLED_APPS.index('mapit'), c)
     except: