auto save

diy.py

+#1、打开文件
+# with open(r'c:\Users\86166\Desktop\新建文本文档.txt','r',encoding='utf-8') as file:
+#     a= file.read()
+#     print(a)
+#2、读取文件
+# with open(r'c:\Users\86166\Desktop\新建文本文档.txt','r',encoding='utf-8') as file:
+#     a= file.readlines()
+#     #print(a)
+# for i in a:
+#     print(i)
+#3、整理数据
+# with open(r'c:\Users\86166\Desktop\新建文本文档.txt','r',encoding='utf-8') as file:
+#     a= file.readlines()
+#     #print(a)
+# for i in a:
+#     data = i.split()
+#     print(data)
+#     print(data[0])
+#     print(data[1:])
+#4、统计数据
+# with open(r'c:\Users\86166\Desktop\新建文本文档.txt','r',encoding='utf-8') as file:
+#     a= file.readlines()
+#     #print(a)
+# for i in a:
+#     data = i.split()
+#     sum = 0
+#     for sales in data[1:]:
+#         sum += int(sales)
+#     result = data[0]+':'+str(sum)
+#     print(result)
+#5、写入数据
 with open(r'c:\Users\86166\Documents\lesson13-1\sales_list.txt','r',encoding='utf-8') as file:
-    a= file.readline()
-    print(a)
+    a= file.readlines()
+    #print(a)
+final_sum=[]
+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)
+print(final_sum)
+with open(r'c:\Users\86166\Desktop\新建文本文档.txt','w',encoding='utf-8') as file1:
+    file1.writelines(final_sum)