Fixed issue #3 (NotADirectoryError due to race condition).

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

sensormapgeo/transformer_2d.py

@@ -28,6 +28,7 @@ from typing import Union, List, Tuple, Optional
 import os
 import warnings
 from tempfile import TemporaryDirectory
+from time import sleep
 
 import numpy as np
 import gdal
@@ -242,6 +243,8 @@ class SensorMapGeometryTransformer(object):
 
                 # noinspection PyUnusedLocal
                 ds_out = None
+                # avoid NotADirectoryError, possibly due to a race condition on Windows
+                sleep(.1)
 
             # add 1 px buffer around out_extent to avoid cutting the output image
             x_size += 2