save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：本9'、'张伟：16本'
-file=open(r"C:\Users\chen\Desktop\text.txt",'a',encoding='utf-8')
-# 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')
-file.append('官方:43本')
-file.close()
\ No newline at end of file
+# with open(r"C:\Users\chen\Desktop\text.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')
+new_data=' '
+with open(r"C:\Users\chen\Desktop\text.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:32本')
+        new_data+=data
+with open(r"C:\Users\chen\Desktop\text.txt",'w',encoding='utf-8')as file:
+    file.write(new_data)
+with open(r"C:\Users\chen\Desktop\text.txt",'r',encoding='utf-8')as file:
+    a=file.read()
+    print(a)
\ No newline at end of file