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\text.txt","w",encoding="utf-8")
+# file.write('小兰：12本\n,小丽：11本\n,李文：9本\n,张伟：16本\n')
+# file.write("小强：10本\n,李明：15本\n")
+# file.close()
+new_data=""
+with open(r"C:\Users\Administrator\Desktop\text.txt","r",encoding="utf-8") as file:
+    a = file.readlines()
+    for data in a:
+        if "小强：10本"in data:
+            data=data.replace("小强：10本","小强：11本")
+        new_data+=data
+print(new_data)
+
+with open(r"C:\Users\Administrator\Desktop\text.txt","w",encoding="utf-8") as file:
+    file.write(new_data)
+   
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