save project

diy1.py

-try:
-    age = int(input('你今年几岁了？'))
-except:
-    print('要输入整数')
-else:
-    if age < 18:
-        print('不可以喝酒')    
-print('程序结束~~')
\ No newline at end of file
+def add():
+    x = 5
+    y = 9
+    print("执行return之前")
+    return x
+    print("执行return之后")
+    z=x+y
+result = add()
+print(result)
\ No newline at end of file