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'
+# filel=open(r"C:\Users\Administrator\Desktop\text.txt",'w',encoding='utf-8')
+# filel.write('小兰:12本\n')
+# filel.close()
+# with open(r"C:\Users\Administrator\Desktop\text.txt",'r',encoding='utf-8') as filel:
+#     for data in filel:
+#         if'小兰:12本' in data:
+#             print('数据在文件中')
+new_data=''
+with open(r"C:\Users\Administrator\Desktop\text.txt",'r',encoding='utf-8') as filel:
+    for data in filel:
+        if'小兰:12本' in data:
+            data=data.replace('小兰:12本','小兰:13本')
+        new_data+=data
+with open(r"C:\Users\Administrator\Desktop\text.txt",'w',encoding='utf-8') as filel:
+    filel.write(new_data)