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'
+# e =open(r"C:\Users\Administrator\Desktop\新建文件夹\test.txt","w",encoding="utf-8")
+# e.write('小兰：12本')
+# e.close()
+# with open(r"C:\Users\Administrator\Desktop\新建文件夹\test.txt","a",encoding="utf-8") as  e:
+#     e.write('小丽：11本')  
+new_date=""
+with open(r"C:\Users\Administrator\Desktop\新建文件夹\test.txt","r",encoding="utf-8") as  e:
+    for a in e:
+        if '小兰：12本'in a:
+            a=a.replace("小兰：12本"，"小兰：10本")
+            new_date+=a
+with open(r"C:\Users\Administrator\Desktop\新建文件夹\test.txt","w",encoding="utf-8") as  e:
+    e.write(new_date)
+with open(r"C:\Users\Administrator\Desktop\新建文件夹\test.txt","r",encoding="utf-8") as  e:
+    a=e.read
+    print(a)
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