更新

Python-100-Days/Day66-75/code/generator02.py

@@ -0,0 +1,18 @@
+from time import sleep
+
+
+def countdown(n):
+    while n > 0:
+        yield n
+        n -= 1
+
+
+def main():
+    for num in countdown(5):
+        print(f'Countdown: {num}')
+        sleep(1)
+    print('Countdown Over!')
+
+
+if __name__ == '__main__':
+    main()