auto save

diy.py

-with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt'
-,'r',encoding='utf-8') as file:
-    # 读取数据
+with open(r'C:\Users\Administrator\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8')as file:
     a = file.readlines()
     a = file.readlines()
     print(a)
     print(a)
-    for i in a:
-        print(i)
+
+final_sum = []
\ No newline at end of file
+for i in a:
+    data = i.split()
+    sum = 0
+    for sales in data[1:]:
+        sum += int(sales)
+    result = data[0] + str(sum) + '\n'
+    final_sum.append(result)
+
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')as file:
+    file.writelines(final_sum)
+

write.py

+a = ['asdf\n','阿舒服\n','撒覅2\n']
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8')as file:
+    file.writelines(a)