map_col(function, column_index) implemented and example added

examples/templates/table_example.py

@@ -24,9 +24,15 @@
 # set class for every cell
 table1.col_class('class_example_2')
 
+#applies function to upper string for every cell
+table1.map_col(lambda x: x.upper())
+
 # set class for first column of each row
 table2.col_class('class_example_1', 0)
 
+#applies function to lower string for second column
+table2.map_col(lambda x: x.lower(), 1)
+
 # set class for every row
 table3.row_class('class_example_3')
 

tempy/widgets.py

@@ -205,6 +205,17 @@ def row_class(self, css_class, row_index=None):
         elif row_index >= 0 and (row_index < len(self.body.childs)):
             self.body.childs[row_index].attr(klass=css_class)
 
+    def map_col(self, col_function, col_index=None):
+        # applies to every cell
+        if col_index is None:
+            for row in self.body.childs:
+                for cell in row.childs:
+                    cell.childs[0] = col_function(cell.childs[0])
+        elif col_index >= 0:
+            for row in self.body.childs:
+                if col_index < len(row.childs):
+                    row.childs[col_index].childs[0] = col_function(row.childs[col_index].childs[0])
+
 class TempyListMeta:
     """Widget for lists, manages the automatic generation starting from iterables and dicts.
     Plain iterables will produce plain lists, nested dicts will produce nested lists.