save project

diy.py

@@ -4,6 +4,12 @@
 #file1.write('李文:9本\n')
 #file1.write('张伟:16本\n')
 #file1.close()        
-with open(r'C:\Users\makcoo03\Desktop\book.txt','a',encoding='utf-8') as file1:
-    file1.write('小强:12本\n')
-    file1.write('李明:9本\n')  
+#with open(r'C:\Users\makcoo03\Desktop\book.txt','a',encoding='utf-8') as file1:
+#    file1.write('小强:12本\n')
+#    file1.write('李明:9本\n')  
+with open(r'C:\Users\makcoo03\Desktop\book.txt','r',encoding='utf-8') as file1:
+    for date in file1:
+        if '小强:10本' in date:
+            print('小强数据在文件中')
+        if '小兰:12本' in date:
+            print('小兰数据在文件中')
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