replaces Plotter and NetcdfWriter with Statistics-example in test_multithreading.sh

* matplotlib.pyplot and netCDF4 can have issues with multithreading

tests/python/test_multithreading.sh.in

@@ -7,7 +7,7 @@
 
 """:"
 @TEST_MPI_FALSE@exit 77
-@PYTHON@ -c 'import mpi4py, netCDF4' || exit 77
+@PYTHON@ -c 'import mpi4py' || exit 77
 
 PYTHONPATH="@abs_top_builddir@/python:$PYTHONPATH"
 export PYTHONPATH
@@ -16,12 +16,13 @@ exec @MPI_LAUNCH@ -n 2 @PYTHON@ "$0"
 ":"""
 
 import sys
+import numpy as np
 from datetime import timedelta
 
 from mpi4py import MPI
 
 from yac import YAC
-from yac.examples import Driver, NoiseGenerator, Plotter, NetCDF_Writer
+from yac.examples import Driver, NoiseGenerator, Statistics
 
 yac = YAC(default_instance=True)
 
@@ -36,14 +37,15 @@ if rank == 0:
     driver.run(NoiseGenerator(timestep="PT1H"))
 elif rank == 1:
     driver.run(
-        NetCDF_Writer(
-            "test_multithreading.noise1.nc",
-            timestep=timedelta(hours=1),
-            gridfile="@top_builddir@/grids/icon_grid_0030_R02B03_G.nc",
+        Statistics(
             variables=[("noisegenerator", "noise_grid", "noise")],
+            comp_name="statistics_global",
+            grid_name="stat_grid_global",
         ),
-        Plotter(
-        variables=[("noisegenerator", "noise_grid", "noise")],
-        outdir="test_multithreading.plots",
+        Statistics(
+            variables=[("noisegenerator", "noise_grid", "noise")],
+            comp_name="statistics_europe",
+            grid_name="stat_grid_europe",
+            bounds = [34*np.pi/180, 70*np.pi/180, -16*np.pi/180, 42*np.pi/180]
         ),
     )