save project

test.py

 
-with open(r"C:\Users\Windows 10\Desktop\book.txt","a",encoding="utf-8") as file:
-    file.write("小强：12本\n")
-    file.write("李明：15本\n")
+with open(r"C:\Users\Windows 10\Desktop\book.txt","r",encoding="utf-8") as file:
+    for i in file:
+        if '小强：10本' in i:
+            print('小强在')
+        if '小兰：12本' in i:
+            print('小兰在')
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