save project

swim.py

-
-with open(r'C:\Users\user\Desktop\book.txt','r',encoding = 'utf-8') as file1
-for i in file1:
-    print(i)
-if '小强' in i:
-    print('在')
-    
+new_data = ''
+with open(r'C:\Users\user\Desktop\book.txt','r',encoding = 'utf-8')as file1:
+    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
+with open(r'C:\Users\user\Desktop\book.txt','w',encoding = 'utf-8')as file1:
+file1.write(new_data)