save project

diy.py

+new_data=''
+with open(r'C:\Users\86177\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')
+        if'小兰：12本'in data:
+            data=data.replace('小兰：12本','小兰：14本')
+        new_data+=data
+
+with open(r'C:\Users\86177\Desktop\book.txt','w',encoding='utf-8') as file:
+    file.write(new_data)       
+            
+
+with open(r'C:\Users\86177\Desktop\book.txt','r',encoding='utf-8') as file:
+    a=file.read()
+    print(a)
+    
+
+    
\ No newline at end of file