auto save

13_1.py

+#打开文件
+
+
+
+
+
+
+
+
+
+
+
+
+
+f = open(r'c:\Users\003\Documents\lesson13-1\sales_list.txt','r',encoding ='utf-8')
+a=f.read()
+
+print(a)
\ No newline at end of file

13_2_1.py/13_2_1.py

+#f = open(r'c:\Users\003\Documents\lesson13-1\sales_list.txt','r',encoding ='utf-8')
+
+with open(r'c:\Users\003\Documents\lesson13-1\sales_list.txt','r',encoding ='utf-8') as f1:
+    a=f1.read()
+    print(type(a[3:5]))
\ No newline at end of file

13_2_1.py/13_2_2.py

+with open(r'c:\Users\003\Documents\lesson13-1\sales_list.txt','r',encoding ='utf-8') as f1:
+    a=f1.readlines()
+    print(a)
\ No newline at end of file

diy.py

+f = open(r'c:\Users\003\Documents\lesson13-1\sales_list.txt','r',encoding ='utf-8')
+a=f.read()
+
+print(a)
\ No newline at end of file