[FIX] Removed header types and flags from .csv and .tab

Orange/data/io.py

@@ -431,8 +431,8 @@ def get_reader(cls, filename):
         raise IOError('No readers for file "{}"'.format(filename))
 
     @classmethod
-    def write(cls, filename, data):
-        return cls.write_file(filename, data)
+    def write(cls, filename, data, with_annotations=True):
+        return cls.write_file(filename, data, with_annotations)
 
     @classmethod
     def write_table_metadata(cls, filename, data):
@@ -798,11 +798,12 @@ def header_flags(data):
                                                   zip(repeat('meta'), data.domain.metas)))))
 
     @classmethod
-    def write_headers(cls, write, data):
+    def write_headers(cls, write, data, with_annotations):
         """`write` is a callback that accepts an iterable"""
         write(cls.header_names(data))
-        write(cls.header_types(data))
-        write(cls.header_flags(data))
+        if with_annotations:
+            write(cls.header_types(data))
+            write(cls.header_flags(data))
 
     @classmethod
     def formatter(cls, var):
@@ -915,12 +916,13 @@ def read(self):
         raise ValueError('Cannot parse dataset {}: {}'.format(self.filename, error)) from error
 
     @classmethod
-    def write_file(cls, filename, data):
+    def write_file(cls, filename, data, with_annotations=True):
         with cls.open(filename, mode='wt', newline='', encoding='utf-8') as file:
             writer = csv.writer(file, delimiter=cls.DELIMITERS[0])
-            cls.write_headers(writer.writerow, data)
+            cls.write_headers(writer.writerow, data, with_annotations)
             cls.write_data(writer.writerow, data)
-        cls.write_table_metadata(filename, data)
+        if with_annotations:
+            cls.write_table_metadata(filename, data)
 
 
 class TabReader(CSVReader):
@@ -947,7 +949,7 @@ def read(self):
                 return table
 
     @classmethod
-    def write_file(cls, filename, data):
+    def write_file(cls, filename, data, with_annotations=True):
         with cls.open(filename, 'wb') as f:
             pickle.dump(data, f, pickle.HIGHEST_PROTOCOL)
 
@@ -1024,7 +1026,7 @@ def read(self):
         return table
 
     @classmethod
-    def write_file(cls, filename, data):
+    def write_file(cls, filename, data, with_annotations=True):
         vars = list(chain((ContinuousVariable('_w'),) if data.has_weights() else (),
                           data.domain.attributes,
                           data.domain.class_vars,
@@ -1058,7 +1060,7 @@ def write_graph(cls, filename, graph):
         tree.export_graphviz(graph, out_file=cls.open(filename, 'wt'))
 
     @classmethod
-    def write(cls, filename, tree):
+    def write(cls, filename, tree, with_annotations):
         if type(tree) == dict:
             tree = tree['tree']
         cls.write_graph(filename, tree)

Orange/widgets/data/owsave.py

@@ -48,6 +48,7 @@ class Error(widget.OWWidget.Error):
     filetype = Setting(FILE_TYPES[0][0])
     compression = Setting(COMPRESSIONS[0][0])
     compress = Setting(False)
+    with_annotations = Setting(True)
 
     def __init__(self):
         super().__init__()
@@ -89,6 +90,10 @@ def __init__(self):
 
         box.layout().addLayout(form)
 
+        self.annotations_cb = gui.checkBox(
+            self.controlArea, self, "with_annotations", label="Save with Orange annotations",
+        )
+
         self.save = gui.auto_commit(
             self.controlArea, self, "auto_save", "Save", box=False,
             commit=self.save_file, callback=self.adjust_label,
@@ -175,14 +180,18 @@ def save_file(self):
                     os.path.join(
                         self.last_dir,
                         self.basename + self.type_ext + self.compress_ext),
-                    self.data)
+                    self.data, self.with_annotations,
+                    )
             except Exception as err_value:
                 self.error(str(err_value))
             else:
                 self.error()
 
     def update_extension(self):
         self.type_ext = [ext for name, ext, _ in FILE_TYPES if name == self.filetype][0]
+        self.annotations_cb.setEnabled(True)
+        if self.type_ext in ['.pkl', '.xlsx']:
+            self.annotations_cb.setEnabled(False)
         self.compress_ext = dict(COMPRESSIONS)[self.compression] if self.compress else ''
 
     def _update_text(self):