Added 'heading' member to RowFmt

formatting.py

@@ -60,13 +60,15 @@ def __init__(self, name, align, width, qualifier=None, pre=None, post=None, key=
         self.pre = pre or ''
         self.post = post or ''
 
+
     def str(self):
         return '{pre}{title:{align}{width}}{post}'.format(
                 title=self.name,
                 align=self.align, width=self.width,
                 pre=self.pre, post=self.post,
             )
 
+
     def format(self, value):
         return '{pre}{value:{align}{width}{qual}}{post}'.format(
                 value=self.key(value),
@@ -107,6 +109,7 @@ def __init__(self, prefix=None):
         self.columns = []
         self.prefix = prefix or ""
 
+
     def append(self, column, after=None):
         columns = self.columns
         if after:
@@ -117,18 +120,25 @@ def append(self, column, after=None):
         columns.append(column)
         return self
 
+
     def insert(self, pos, column):
         if column is not None:
             self.columns.insert(pos, column)
 
+
     def str(self):
         return self.prefix + ' '.join(col.str() for col in self.columns)
 
+
+    def heading(self):
+        headline = self.str()
+        return headline, '-' * len(headline)
+
+
     def format(self, rowData):
         return self.prefix + ' '.join(col.format(rowData) for col in self.columns)
 
 
-
 if __name__ == '__main__':
     rowFmt = RowFormat(). \
                 append(ColumnFormat("Name", '<', '8', key=lambda row: row['name'])). \