Raise IOError when file not found

python/triskele/CreaTIFF.py

@@ -8,6 +8,7 @@
 #
 # TODO details
 
+from pathlib import Path
 import numpy as np
 import gdal
 
@@ -41,7 +42,12 @@ def write(fname, X):
     dst_ds.FlushCache()
 
 def read(fname):
-    gdl_data = gdal.Open(str(fname))
+    pname = Path(fname)
+
+    if not pname.exists():
+        raise IOError('File not found: {}'.format(pname))
+
+    gdl_data = gdal.Open(pname.as_posix())
 
     if gdl_data.RasterCount == 1:
         return gdl_data.ReadAsArray()