enable use of path objects, strings, and opened files

python/damask/geom.py

@@ -250,7 +250,11 @@ class Geom():
             geometry file to read.
 
         """
-        with (open(fname) if isinstance(fname,str) else fname) as f:
+        try:
+            f = open(fname)
+        except TypeError:
+            f = fname
+
         f.seek(0)
         header_length,keyword = f.readline().split()[:2]
         header_length = int(header_length)
@@ -320,15 +324,15 @@ class Geom():
             plain = not pack
 
         if plain:
-            format_string = '%g' if self.microstructure in np.sctypes['float'] else \
+            format_string = '%g' if self.microstructure.dtype in np.sctypes['float'] else \
                             '%{}i'.format(1+int(np.floor(np.log10(np.nanmax(self.microstructure)))))
             np.savetxt(fname,
                        self.microstructure.reshape([grid[0],np.prod(grid[1:])],order='F').T,
                        header='\n'.join(header), fmt=format_string, comments='')
         else:
-            if isinstance(fname,str):
+            try:
                 f = open(fname,'w')
-            else:
+            except TypeError:
                 f = fname
 
             compressType = None