do not ignore arbitrary Exceptions

tests/test_dataset.py

@@ -35,18 +35,18 @@ def compareFiles(fn, strIn, strOut, skiplines=0, nlines=-1):  # pragma: no cover
             valid_data_line = False
             # maybe this is a data line in which we only have different number formatting?
             # compare as floats
-            try:
+            # try:
             insteps = [float(x) for x in inline.split(",")]
             outsteps = [float(x) for x in outline.split(",")]
             if len(insteps) == len(outsteps):
                 valid_data_line = True
                 for i in range(len(insteps)):
                     valid_data_line = valid_data_line and insteps[i] == outsteps[i]
-            except:
-                pass
+            # except:
+            #     pass
 
             valid_var_line = False
-            try:
+            # try:
             insteps = [x.strip() for x in inline.split(",")]
             outsteps = [x.strip() for x in outline.split(",")]
             if len(insteps) == 2 and len(outsteps) == 3:
@@ -55,13 +55,13 @@ def compareFiles(fn, strIn, strOut, skiplines=0, nlines=-1):  # pragma: no cover
                     and insteps[1] == outsteps[1]
                     and insteps[1] == outsteps[2]
                 )
-            except:
-                pass
+            # except:
+            #     pass
 
             if not valid_data_line and not valid_var_line:
-                print("{:s}: line {:d} differs:".format(fn, i))
-                print("  input: {:s}".format(inline))
-                print(" output: {:s}".format(outline))
+                print(f"{str(fn)}: line {i:d} differs:")
+                print(f"  input: {inline}")
+                print(f" output: {outline}")
 
                 return False