save project

123.py

+nen_data=''
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file:
+    for data in file:
+        if'小强：10本'in data:
+            data=data.replace('小强：10本','小强：11本')
+        nen_data+=data
+
+        
+with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file:
+    file.write(nen_data)
\ No newline at end of file