save project

diy.py

-with open(r"C:\Users\xuank\Desktop\diy.txt",'w',encoding='utf-8') as word:
-    word.write("小兰：20本\n")
-    word.write("小强：19本\n")
-    word.write("李明：10本\n")
-    word.write("小丽：39本\n")
+with open(r"C:\Users\xuank\Desktop\diy.txt",'r',encoding='utf-8') as word:
+    for i in word:
+        if "小强：10" in i:
+            print("已找到数据")
+        else:
+            print('不在')
\ No newline at end of file