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'
-with open(r"C:\Users\Administrator\Desktop\class1.txt","w",encoding="utf-8")as fill1:
-    fill1.write("小强：11本，李明：12本")
\ No newline at end of file
+new=""
+data=""
+with open(r"C:\Users\Administrator\Desktop\class1.txt","r",encoding="utf-8")as fill1:
+    b=fill1.read()
+    #for a in fill1:
+    if "小强：11本" in b:
+        data=b.replace("小强：11本","小强：10本")
+    if "小兰：12本" in b:
+        data=b.replace("小兰：12本","小兰：14本")
+    new+=data
+    print(new)
+#with open(r"C:\Users\Administrator\Desktop\class1.txt","w",encoding="utf-8")as fill1:
+#    fill1.write(new)
+#with open(r"C:\Users\Administrator\Desktop\class1.txt","r",encoding="utf-8")as fill1:
+    a=fill1.read()
+    print(a)
\ No newline at end of file