save project

diy.py

-#file=open(r"C:\Users\Makcoo-Bellcode\Desktop\test.txt",'a',encoding="utf-8")
-#
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+with open(r"C:\Users\玛酷机器人\Desktop\C++test.txt",'r',encoding='utf-8') as file:
+    a=file.read()
+    print(a)
+    for data in a:
+        if "小黑: 18本" in data：
+            print("数据在文件里")
+        else:
+            print("数据不在文件里")
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