Moved numpy import helper to shortcuts

Numpy will be used in both the geos and gdal modules,
so the import should sit in the parent module gis.

django/contrib/gis/geos/base.py

@@ -12,12 +12,6 @@ except ImportError:
         HAS_GDAL = False
     gdal = GDALInfo()
 
-# NumPy supported?
-try:
-    import numpy
-except ImportError:
-    numpy = False
-
 
 class GEOSBase(object):
     """

django/contrib/gis/geos/coordseq.py

@@ -6,9 +6,10 @@
 from ctypes import byref, c_double, c_uint
 
 from django.contrib.gis.geos import prototypes as capi
-from django.contrib.gis.geos.base import GEOSBase, numpy
+from django.contrib.gis.geos.base import GEOSBase
 from django.contrib.gis.geos.error import GEOSException, GEOSIndexError
 from django.contrib.gis.geos.libgeos import CS_PTR
+from django.contrib.gis.shortcuts import numpy
 from django.utils.six.moves import range
 
 

django/contrib/gis/geos/linestring.py

@@ -1,9 +1,9 @@
 from django.contrib.gis.geos import prototypes as capi
-from django.contrib.gis.geos.base import numpy
 from django.contrib.gis.geos.coordseq import GEOSCoordSeq
 from django.contrib.gis.geos.error import GEOSException
 from django.contrib.gis.geos.geometry import GEOSGeometry
 from django.contrib.gis.geos.point import Point
+from django.contrib.gis.shortcuts import numpy
 from django.utils.six.moves import range
 
 

django/contrib/gis/geos/tests/test_geos.py

@@ -10,6 +10,7 @@ from unittest import skipUnless
 
 from django.contrib.gis.gdal import HAS_GDAL
 from django.contrib.gis.geometry.test_data import TestDataMixin
+from django.contrib.gis.shortcuts import numpy
 from django.utils import six
 from django.utils.encoding import force_bytes
 from django.utils.six.moves import range
@@ -20,7 +21,7 @@ if HAS_GEOS:
     from .. import (GEOSException, GEOSIndexError, GEOSGeometry,
         GeometryCollection, Point, MultiPoint, Polygon, MultiPolygon, LinearRing,
         LineString, MultiLineString, fromfile, fromstr, geos_version_info)
-    from ..base import gdal, numpy, GEOSBase
+    from ..base import gdal, GEOSBase
 
 
 @skipUnless(HAS_GEOS, "Geos is required.")

django/contrib/gis/shortcuts.py

@@ -5,6 +5,12 @@ from django.conf import settings
 from django.http import HttpResponse
 from django.template import loader
 
+# NumPy supported?
+try:
+    import numpy
+except ImportError:
+    numpy = False
+
 
 def compress_kml(kml):
     "Returns compressed KMZ from the given KML string."