save project

diy.py

+# 写入同学们的捐赠明细： 
+file1=open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8')
+file1.write('小兰:12本\n')
+file1.write('小丽:11本\n')
+file1.write('李文:9本\n')
+file1.write('张伟:16本\n')
+file1.close()
+with open(r'C:\Users\Administrator\Desktop\book.txt','a',encoding='utf-8') as file1:
+
+    file.write('小强:10本\n')
+    file.write('李明:15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：10本'in data:
+            print('小强数据在文件中')
+            data=data.replace('小强：10本','小强：11本')
+        if '小兰：12本'in data:
+            print('小兰数据在文件中')
+            data=data.replace('小兰：12本','小兰：14本')
+        new_data+=data
+with open(r'C:\Users\Administrator\Desktop\book.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+with open(r'C:\Users\Administrator\Desktop\book.txt','r',encoding='utf-8') as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file