Fix code review findings in benchmark modules (#1137)

- dasymetric.py: add call parens to has_cuda_and_cupy() guard
- reproject.py: move import to module level to keep it out of timed methods

Author: brendancol

benchmarks/benchmarks/dasymetric.py

@@ -28,7 +28,7 @@ def setup(self, nx, type):
             zdata = da.from_array(zones_np, chunks=(max(1, ny // 2), max(1, nx // 2)))
         elif type == "cupy":
             from xrspatial.utils import has_cuda_and_cupy
-            if not has_cuda_and_cupy:
+            if not has_cuda_and_cupy():
                 raise NotImplementedError()
             import cupy
             zdata = cupy.asarray(zones_np)

benchmarks/benchmarks/reproject.py

@@ -1,23 +1,18 @@
-import numpy as np
-import xarray as xr
-
 from .common import get_xr_dataarray
 
-
-def _has_pyproj():
-    try:
-        import pyproj  # noqa: F401
-        return True
-    except ImportError:
-        return False
+try:
+    from xrspatial.reproject import reproject as _reproject
+    _HAS_PYPROJ = True
+except ImportError:
+    _HAS_PYPROJ = False
 
 
 class Reproject:
     params = ([100, 300, 1000], ["numpy", "dask"])
     param_names = ("nx", "type")
 
     def setup(self, nx, type):
-        if not _has_pyproj():
+        if not _HAS_PYPROJ:
             raise NotImplementedError("pyproj required")
 
         ny = nx // 2
@@ -26,9 +21,7 @@ def setup(self, nx, type):
         self.xr.attrs["crs"] = "EPSG:4326"
 
     def time_reproject_to_mercator(self, nx, type):
-        from xrspatial.reproject import reproject
-        reproject(self.xr, "EPSG:3857")
+        _reproject(self.xr, "EPSG:3857")
 
     def time_reproject_to_utm(self, nx, type):
-        from xrspatial.reproject import reproject
-        reproject(self.xr, "EPSG:32610")
+        _reproject(self.xr, "EPSG:32610")