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\text.txt","w",encoding="utf-8")
+file.write("小兰:12本")
+file.close()
+
+with open(r"C:\Users\admin\Desktop\text.txt","a",encoding="utf-8") as file2:
+    file2.write("大白100本\n")
+
+with open(r"C:\Users\admin\Desktop\text.txt","r",encoding="utf-8") as file3:
+    a=file3.read()
+    if "小兰:12本" in a:
+        print("找到了")
+    a=a.replace("小兰:12本","小兰:200本")
+
+with open(r"C:\Users\admin\Desktop\text.txt","w",encoding="utf-8") as file4:
+    file4.write(a)
+