save project

diy.py

+ndata=' '
+# 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\CDLX\Desktop\test.txt",'w',encoding='utf-8') as file:
+    file.write('小兰：12本\n小丽：11本\n李文：9本\n张伟：16本\n小强：10本\n')
+
+with open(r"C:\Users\CDLX\Desktop\test.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\n','小强：11本\n')
+        ndata=data+ndata
+
+with open(r"C:\Users\CDLX\Desktop\test.txt",'w',encoding='utf-8') as file:
+    file.write(ndata)
+
+with open(r"C:\Users\CDLX\Desktop\test.txt",'r',encoding='utf-8') as file:
+    a=file.read()
+    print(a)
+
+