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'
+#file=open(r'C:\Users\admin\Desktop\book.txt','w',encoding='utf_8')
+#file.write("小兰:12本\n小丽:11本\n李文:9本\n张伟:16本\n")
+#file.close()
+#with open(r'C:\Users\admin\Desktop\book.txt','a',encoding='utf_8') as file:
+    #file.write("小强:10本\n李明:15本")
+new_data=""
+with open(r'C:\Users\admin\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")
+        new_data+=data
+
+with open(r'C:\Users\admin\Desktop\book.txt','w',encoding='utf_8') as file:
+    file.write(new_data)
+with open(r'C:\Users\admin\Desktop\book.txt','r',encoding='utf_8') as file:
+    a=file.read()
+    print(a)
+            
+        
+        
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