save project

diy.py

@@ -2,3 +2,16 @@
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')as file1:
 with open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')as file1:
         file1.write('小强:12本\n')
         file1.write('小强:12本\n')
         file1.write('李明:15本\n')
         file1.write('李明:15本\n')
+file1=open(r'C:\Users\Administrator\Desktop\test.txt','a',encoding='utf-8')
+file1.write('小丽:10')
+file1.close()#追加
+
+file1=open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')
+a=file1.read()
+print(a)
+
+file1.close()#读取
+with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8')as file1:
+        for data in file1:
+            if '小丽:10' in data:
+                print("存在")