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'
+b=''
+with open(r'C:\Users\MAKCOO\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\MAKCOO\Desktop\num.txt','r',encoding='UTF-8') as file:
+    for data in file:
+        if '小兰：12本' in data:
+            data=data.replace('小兰：12本','小兰:14本')
+        b+=data
+        # print(b)
+with open(r'C:\Users\MAKCOO\Desktop\num.txt','w',encoding='UTF-8') as file:
+    file.write(b)
\ No newline at end of file