save project

diy.py

@@ -6,6 +6,7 @@
 # file.write('张伟：16本\n')
 # file.close()
 
-with open(r"C:\Users\EDZ\Desktop\test.txt","a",encoding="utf-8") as file:
-    file.write('小强\n')
-    file.write('李明\n')
\ No newline at end of file
+with open(r"C:\Users\EDZ\Desktop\test.txt","r",encoding="utf-8") as file:
+    for data in file:
+        if '小强：' in data:
+            print("数据在文件中")
\ No newline at end of file