save project

.[J,OJ.PY

+file1=open(r'c:\users\CM\Desktop\test.txt','w',encoding='utf-8')
+file1.write('小强：10本\n')
+file1.write('李明：15本\n')
+file1.close()
+
+file1=open(r'C:\Users\CM\Desktop\test.txt','a',encoding='utf-8')
+file1.write('小兰：12本\n')
+file1.close()
+
+with open(r'C:\Users\CM\Desktop\test.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if '小强：10本' in data
+            print('数据在文件中')
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