auto save

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
-#file=open(r"C:\Users\Administrator\Desktop\test.txt",'a',encoding='utf-8')
-#file.write('小兰：12本')
-#file.write('小强：15本\n')
-#file.write('李明：15本\n')
-#file.close()
-with open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding='utf-8') as file:
-    file.write('小丽：11本\n')
-    file.write('李文：9本\n')
-    file.write('张伟：16本\n')
+# with open(r"C:\Users\Administrator\Desktop\test.txt",'w',encoding='utf-8') as file:
+#     file.write('小强：10本\n')
+#     file.write('小明：15本\n')
+# with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file:
+#     a=file.read()  
+#     print(a)
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file:
+    for i in file:
+        if '小强：10本' in i:
+            print("找到了") 
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