save project

diy2.py

+new_data=''
 with open(r'C:\Users\CM\Desktop\test.txt','r',encoding='utf-8') as file1:
     for date in file1:
-        if'小强：十本' in data:
-            print("数据在文件中")
\ No newline at end of file
+        if'小强：10本' in data:
+            data=data.replace('小强:10本','小强：11本')
+         if'小兰：12本' in data:
+            data=data.replace('小强:12本','小强：14本')
+        new_data+=data
+with open(r'C:\Users\CM\Desktop\book.txt','r',encoding='utf-8') as file1:
+    filel.write(new_data)
+
+with open(r'C:\Users\CM\Desktop\test.txt','r',encoding='utf-8') as file1:
+    a=filel.read()
+    print(a)
\ No newline at end of file