replace deprecated time.clock() in tests

Fix warnings and prepare for Python 3.8.

test/test_awips221.py

@@ -59,11 +59,11 @@ def test_awips221():
     dy = (urcrnry - llcrnry) / (ny - 1)
     x = llcrnrx + dx * numpy.indices((ny, nx), "f")[1, :, :]
     y = llcrnry + dy * numpy.indices((ny, nx), "f")[0, :, :]
-    t1 = time.clock()
+    t1 = time.perf_counter()
     lons, lats = awips221(
         numpy.ravel(x).tolist(), numpy.ravel(y).tolist(), inverse=True
     )
-    t2 = time.clock()
+    t2 = time.perf_counter()
     print("data in lists:")
     print("compute lats/lons for all points on AWIPS 221 grid (%sx%s)" % (nx, ny))
     print("max/min lons")
@@ -73,19 +73,19 @@ def test_awips221():
     print("took", t2 - t1, "secs")
     xa = array.array("f", numpy.ravel(x).tolist())
     ya = array.array("f", numpy.ravel(y).tolist())
-    t1 = time.clock()
+    t1 = time.perf_counter()
     lons, lats = awips221(xa, ya, inverse=True)
-    t2 = time.clock()
+    t2 = time.perf_counter()
     print("data in python arrays:")
     print("compute lats/lons for all points on AWIPS 221 grid (%sx%s)" % (nx, ny))
     print("max/min lons")
     print(min(lons), max(lons))
     print("max/min lats")
     print(min(lats), max(lats))
     print("took", t2 - t1, "secs")
-    t1 = time.clock()
+    t1 = time.perf_counter()
     lons, lats = awips221(x, y, inverse=True)
-    t2 = time.clock()
+    t2 = time.perf_counter()
     print("data in a numpy array:")
     print("compute lats/lons for all points on AWIPS 221 grid (%sx%s)" % (nx, ny))
     print("max/min lons")
@@ -98,9 +98,9 @@ def test_awips221():
     )
     print("took", t2 - t1, "secs")
     # reverse transformation.
-    t1 = time.clock()
+    t1 = time.perf_counter()
     xx, yy = awips221(lons, lats)
-    t2 = time.clock()
+    t2 = time.perf_counter()
     print("max abs error for x")
     max_abs_err_x = numpy.maximum.reduce(numpy.fabs(numpy.ravel(x - xx)))
     print(max_abs_err_x)

test/test_pickle.py

@@ -45,9 +45,9 @@ def test_pickle():
             pickle.dump(awips221_pre_pickle, pfh, -1)
         with open(os.path.join(tmpdir, "test.pickle"), "rb") as prh:
             awips221 = pickle.load(prh)
-    t1 = time.clock()
+    t1 = time.perf_counter()
     lons, lats = awips221(x, y, inverse=True)
-    t2 = time.clock()
+    t2 = time.perf_counter()
     print("compute lats/lons for all points on AWIPS 221 grid (%sx%s)" % (nx, ny))
     print("max/min lons in radians")
     print(
@@ -59,9 +59,9 @@ def test_pickle():
     )
     print("took", t2 - t1, "secs")
     # reverse transformation.
-    t1 = time.clock()
+    t1 = time.perf_counter()
     xx, yy = awips221(lons, lats)
-    t2 = time.clock()
+    t2 = time.perf_counter()
     print("max abs error for x")
     max_abs_err_x = numpy.maximum.reduce(numpy.fabs(numpy.ravel(x - xx)))
     print(max_abs_err_x)