auto save

1.py

+new_data=''
+with open(r"C:\Users\ThinkPad\Desktop\test.txt",'r',encoding='utf-8')as file1:
+    for data in file1:
+        if '小强：10本'in data:
+            data=data.replace('小强：10本','小强：11本')
+            print('数据在文件中')
+        if '小兰：10本'in data:
+            data=data.replace('小兰：12本','小兰：14本')
+            print('数据2在文件中')
+            new_data+=data
+with open(r"C:\Users\ThinkPad\Desktop\test.txt",'w',encoding='utf-8')as file1:
+    file1.write(new_data)
+with open(r"C:\Users\ThinkPad\Desktop\test.txt",'r',encoding='utf-8')as file1:
+    a=file1.read()
+    print(a)
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