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'
 # 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'
 new_date=''
 new_date=''
-with open(r"C:\Users\PC\Desktop\num.txt","a",encoding = "utf-8") as file:
-    file.write('小兰：12本\n')
-    file.write('小丽：11本\n')
-    file.write('李文：9本\n')
-    file.write('张伟：16本\n')
+# with open(r"C:\Users\PC\Desktop\num.txt","w",encoding = "utf-8") as file:
+#     file.write('小兰：12本\n')
+#     file.write('小丽：11本\n')
+#     file.write('李文：9本\n')
+#     file.write('张伟：16本\n')
 with open(r"C:\Users\PC\Desktop\num.txt","r",encoding = "utf-8") as file1:
 with open(r"C:\Users\PC\Desktop\num.txt","r",encoding = "utf-8") as file1:
     for date in file1:
     for date in file1:
         if '张伟：16' in date:
         if '张伟：16' in date:
-            new_date+=date
-with open(r"C:\Users\PC\Desktop\num.txt","w",encoding = "utf-8")as file1:
-    file1.replace(date,new_date)
+            date=date.replace('张伟：16','张伟：17')
+        new_date+=date
+print(new_date)
\ No newline at end of file
+with open(r"C:\Users\PC\Desktop\num.txt","w",encoding = "utf-8") as file1:
+    file1.write(new_date)
\ No newline at end of file