save project

diy.py

+new_data=""
+with open(r"C:\Users\xmbc\Desktop\5.txt",'r',encoding='utf-8') as file1:
+    for data in file1:
+        if'小强:12本'in data:
+            data=data.replace('小强:12本','小强:13本')
+            new_data+=data
+with open(r"C:\Users\xmbc\Desktop\5.txt",'w',encoding='utf-8') as file1:
+    file1.write(new_data)
\ No newline at end of file