save project

diy.py

+file1=open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')
+file1.write('小兰:12本')
+file1.close()
+file1=open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')
+file1.write('小强:10本')
+file1.close()
+new_data=''
+
+
+    for data in file1:
+        if'小强:10本'in data:
+            data=data.replace('小强:10本','小强:11本')
+        new_data+=data
+