save project

1.py

+file1=open(r'C:\Users\Administrator\Desktop\1.txt','w',encoding='utf-8')
+file1.write('小兰:12本\n')
+file1.write('李文:9本\n')
+file1.write('张伟:16本\n')
+file1.write('小丽:11本\n')
+file1.close()
\ No newline at end of file

diy.py

+# 写入同学们的捐赠明细：
+#file1=open(r'C:\Users\Administrator\Desktop\1.txt','w',encoding='utf-8')
+#file1.write('小兰:12本\n')
+#file1.write('李文:9本\n')
+#file1.write('张伟:16本\n')
+#file1.write('小丽:11本\n')
+#file1.close()
+new_wenjian=''
+with open(r'C:\Users\Administrator\Desktop\1.txt','r',encoding='utf-8')as file1:
+    for data in file1:
+        if '李文:9本' in data:
+            data=data.replace('李文:9本','李文:20本')
+        new_wenjian+=data
+with open(r'C:\Users\Administrator\Desktop\1.txt','w',encoding='utf-8')as file1:
+    file1.write(new_wenjian)
+ 
+