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'
+file=open(r"C:\Users\admin\Desktop\SB.txt","w",encoding="utf-8")
+file.write("小兰:12本\n")
+file.close()
+
+with open(r"C:\Users\admin\Desktop\SB.txt","a",encoding="utf-8") as sb2:
+    sb2.write("sb:100\n")
+
+with open(r"C:\Users\admin\Desktop\SB.txt","r",encoding="utf-8") as sb3:
+    a=sb3.read()
+    if "小兰:12本" in a:
+        print("ok")
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