save project

diy.py

+#第一种方法
+file1=open(r"c:\Users\chen\Documents\lesson13-1\sales_list.txt",'r',encoding='utf-8')
+file1.close()
+#第2种方法
+with open(r"c:\Users\chen\Documents\lesson13-1\sales_list.txt",'r',encoding='utf-8') as file1:
+    a=file1.read()
+    
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