auto save

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'
+'''
+a=open(r"C:\\Users\\XMBC\\Desktop\\text(1).txt","w",encoding="utf-8")
+a.write("小兰：12本")
+a.write("小丽：11本")
+a.write("李文：9本")
+a.write("张伟：16本")
+a.close()
+'''
+with open(r"C:\\Users\\XMBC\\Desktop\\text(1).txt","w",encoding="utf-8") as a:
+    a.write("小兰：12本")
+with open(r"C:\\Users\\XMBC\\Desktop\\text(1).txt","a",encoding="utf-8") as a:
+    a.write("小丽：11本")
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