auto save

diy.py

@@ -6,6 +6,17 @@
 # file1.write('张伟：16本\n')
 # file1.write('小强：12本\n')
 # file1.write('李明：15本\n')
-file1 = open('//Users//chunyuhaohao//Desktop//test.txt','a',encoding='utf-8')
-file1.write('小兰：12本\n')
-file1.close()
\ No newline at end of file
+# file1 = open('//Users//chunyuhaohao//Desktop//test.txt','a',encoding='utf-8')
+# file1.write('小兰：12本\n')
+# with open('//Users//chunyuhaohao//Desktop//test.txt','a',encoding='utf-8') as file1:
+#     file1.write('小小：10本\n')
+#     file1.write('小大：15本\n')
+# with open('//Users//chunyuhaohao//Desktop//test.txt','r',encoding='utf-8') as file1:
+#     a = file1.read()
+#     print(a)
+with open('//Users//chunyuhaohao//Desktop//test.txt','r',encoding='utf-8')as file1:
+    for data in file1:
+        if '小强：12本' in data:
+            print('小强在数据文件中')
+        if '小兰：12本'in data:
+            print('小兰在数据文件中')
\ No newline at end of file