auto save

abc.py

+with open(r"c:\Users\Admin\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8")as file:
+    a = file.read()
+    print(type(a[3:5]))
\ No newline at end of file

new_sales_list.txt

+悟空348
+诺依380
+小贝182
+李丽201
+宋扬107
+王明245
+李强164
+孙小白222
+苏琪137
+刘若若147
+刘阳226
+王胜男123
+王娇131悟空348
+诺依380
+小贝182
+李丽201
+宋扬107
+王明245
+李强164
+孙小白222
+苏琪137
+刘若若147
+刘阳226
+王胜男123
+王娇131

文件数据求和.py

+with open(r"c:\Users\Admin\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8")as file1:
+with open(r"c:\Users\Admin\Documents\lesson13-1\sales_list.txt","r",encoding="utf-8")as file1:
+    a = file1.readlines()
+    final_sum = []
+for i in a:
+    data = (i.split())
+    sum = 0
+    for sales in data[1:]:
+        sum = int(sales)+sum
+    result = data[0]+str(sum)+"\n"
+    final_sum.append(result)
+
+with open(r"c:\Users\Admin\Documents\lesson13-1\new_sales_list.txt","a",encoding="utf-8")as file1:
+    file1.writelines(final_sum)
\ No newline at end of file