add a spinner during loading

hn.py

@@ -6,6 +6,8 @@ import webbrowser
 
 from dataclasses import dataclass
 
+spinner_states = ['-', '\\', '|', '/']
+
 @dataclass
 class Story:
     id: int
@@ -25,7 +27,10 @@ def main(stdscr):
         raise Exception('Error fetching data from Hacker News API')
     ids = r.json()[:15]  # Show only the first ten stories
     stories = []
-    for i in ids:
+    for idx, i in enumerate(ids):
+        stdscr.clear()
+        stdscr.addstr(f'[{spinner_states[idx%4]}] Getting stories...')
+        stdscr.refresh()
         story_url = f'https://hacker-news.firebaseio.com/v0/item/{i}.json'
         s = requests.get(story_url).json()
         stories.append(Story(s['id'],
@@ -38,7 +43,7 @@ def main(stdscr):
     current_pos = 0
     while True:
         stdscr.clear()
-        stdscr.addstr('\n\nHacker News Top Stories:\n')
+        stdscr.addstr('Hacker News Top Stories:\n')
         for i, story in enumerate(stories):
             prefix = '>>> ' if i == current_pos else '   '
             text = f'{prefix}{story.title} ({story.link})\n'