save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
 # with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file1:
-    # file1.write('小强:15本\n')
-    # file1.write('小李:14本\n')with open(r'C:\Users\Administrator\Desktop\book.txt') 
-    with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1:
-        for data in file1:
-            if'小强:15本' in data:
-                print("小强数据在文件中")
-            if'小兰:12本' in data:
-                print("小兰数据在文件中")
\ No newline at end of file
+#     file1.write('小强:15本\n')
+#     file1.write('小李:14本\n')
+new_data=""
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if'小强:11本' in data:
+            data = data.replace('小强:11本','小强:17本')
+        if'小兰:12本' in data:
+            data = data.replace("小兰:17本","小兰:14本")
+        new_data=new_data + data
+with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
\ No newline at end of file