save project

diy.py

@@ -5,3 +5,8 @@ with open(r'C:\Users\win 10\Desktop\po.txt','w',encoding='utf-8') as po:
     po.write('李明：15\n')
 with open(r'C:\Users\win 10\Desktop\po.txt','a',encoding='utf-8') as po:
     po.write('小兰:12\n')
+with open(r'C:\Users\win 10\Desktop\po.txt','r',encoding='utf-8') as po:
+    for data in po:
+        if '小兰:12' in data:
+            print('zai')
+            
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