Add skip method to leave empty cells in the current row

Author: insolor

tk_grid_helper/tk_grid_helper.py

@@ -27,6 +27,10 @@ def __init__(self, grid: "Grid", row_index: int):
         self.column_index = 0
         self.cells = list()
 
+    def skip(self, count: int) -> "Row":  # -> self
+        self.column_index += count
+        return self
+
     def add(self, widget: tk.Widget, **kwargs) -> "Row":  # -> self
         if self.cells:
             self.column_index += self.cells[-1].column_span
@@ -40,13 +44,13 @@ def add(self, widget: tk.Widget, **kwargs) -> "Row":  # -> self
 
         return self
 
-    def column_span(self, span: int):  # -> Self
+    def column_span(self, span: int) -> "Row":  # -> Self
         if self.cells:
             self.cells[-1].column_span = span
 
         return self
 
-    def row_span(self, span: int):  # -> Self
+    def row_span(self, span: int) -> "Row":  # -> Self
         if self.cells:
             self.cells[-1].row_span = span