save project

diy.py

@@ -8,5 +8,7 @@
 with open(r'C:\Users\David\Desktop\text.txt','a',encoding='utf-8') as a:
 
     b = a.readline()
-    for 
-    print()
\ No newline at end of file
+     for b in a:
+        if "小强：10本" in a:
+            if"小兰：12本" in a:
+                print("数据在文件中")
\ No newline at end of file

first.py

+# file=open(r'C:\Users\David\Desktop\text.txt','r',encoding='utf-8')
+# a=file.read()
+# print(a)
+# file.close()
+
+# with open(r'C:\Users\David\Desktop\text.txt','r',encoding='utf-8') as file1 :
+#     a=file1.read()
+#     print(a)
+
+with open(r'C:\Users\David\Desktop\text.txt','r',encoding='utf-8') as file2:
+    for data in file2:
+        if "小强：10本" in data:
+            print("数据在文件中")
+
+