save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
 #file1=open(r'C:\Users\Administrator\Desktop\book.txt',"w",encoding="utf-8")
-#file1.write('小兰：12本')
-#file1.write('小丽：11本')
-#file1.write('李文：9本')
-#file1.write('张伟：16本')
+#file1.write('小兰：12本\n')
+#file1.write('小丽：11本\n')
+#file1.write('李文：9本\n')
+#file1.write('张伟：16本\n')
 #file1.close()
-with open(r'C:\Users\Administrator\Desktop\book.txt',"a",encoding="utf-8")as file1:
-    file1.write('小强：12本') 
-    file1.write('李明：15本')
\ No newline at end of file
+#with open(r'C:\Users\Administrator\Desktop\book.txt',"a",encoding="utf-8")as file1:
+ #   file1.write('小强：12本\n') 
+  #  file1.write('李明：15本\n')
+#with open(r'C:\Users\Administrator\Desktop\book.txt',"r",encoding="utf-8")as file1:
+ #   a=file1.read()
+   # print(a)
+    #file1.close()
+with open(r'C:\Users\Administrator\Desktop\book.txt',"r",encoding="utf-8")as file1:
+    for data in file1:
+      if "小强：12"  in data:
+        print("数据在文件中")
\ No newline at end of file