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'
+# l=open("C:\\Users\\1111\\Desktop\\popo.txt","w",encoding="utf-8")
+# l.write("小兰：12本\n小丽：11本\n李文：9本\n张伟：16本")
+# l.close()
+
+# with open("C:\\Users\\1111\\Desktop\\popo.txt","a",encoding="utf-8") as f:
+#     f.write("小强：12本\n")
+#     f.write("李明：15本\n")
+a=""
+with open("C:\\Users\\1111\\Desktop\\popo.txt","r",encoding="utf-8") as f:
+     for i in  f:
+        if "小强：12本" in i:
+            i=i.replace("小强：12本","小强：11本")
+        if "小兰：12本" in i:
+            i=i.replace("小兰：12本","小兰：14本")
+        a=a+i
+with open("C:\\Users\\1111\\Desktop\\popo.txt","w",encoding="utf-8") as f:
+    f.write(a)
\ No newline at end of file