Update test_demo/demo_flaws.py

test_demo/demo_flaws.py

@@ -31,12 +31,12 @@ def long_line():
 
 
 # 缺陷9: 缺少空格
-# def missing_spaces():
+def missing_spaces():
-#     """缺少必要空格"""
+    """缺少必要空格"""
-#     x=1+2
+    x=1+2
-#     y=3*99
+    y=3*99
-#     if x==1:
+    if x==1:
-#         print(x)
+        print(x)
 
 
 # 缺陷1: 未使用的导入