Small improvements

todo.py

@@ -30,7 +30,7 @@ def list_tasks(parent=None):
     print(f"Listing tasks in '{parent if parent else 'root'}'")
     if parent:
         todo = {parent: todo[parent]}
-    print(render_todo(todo))
+    print(build_todo(todo))
 
 
 def complete_task(task, parent=None):
@@ -104,7 +104,7 @@ def parse_todo() -> dict[str, dict]:
     return todo
 
 
-def render_todo(todo: dict[str, dict]) -> str:
+def build_todo(todo: dict[str, dict]) -> str:
     lines = ["# A ToDo list", ""]
     for task, task_data in todo.items():  # type: str, dict
         lines.append(f"- [{'x' if task_data["completed"] else ' '}] {task}")
@@ -116,7 +116,7 @@ def render_todo(todo: dict[str, dict]) -> str:
 
 def write_todo(todo: dict[str, dict]):
     with open(todo_file, "w") as f:
-        f.write(render_todo(todo))
+        f.write(build_todo(todo))
 
 
 def main():