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\MC3-08\Desktop\test1.txt",'a',encoding="utf-8")
-filel.write("\n")
-filel.write('小兰：12本')
-filel.close()
+# filel = open(r"C:\Users\MC3-08\Desktop\test1.txt",'a',encoding="utf-8")
+# filel.write("\n")
+# filel.write('小兰：12本')
+new = ""
+with open(r"C:\Users\MC3-08\Desktop\test1.txt","r",encoding="utf-8") as filel:
+    for date in filel:
+        if "小2b：10本" in date:
+            date = date.replace("小2b：10本","小2b：13本")
+        new = new+date
+with open(r"C:\Users\MC3-08\Desktop\test1.txt","w",encoding="utf-8") as filel:
+    filel.write(new)