save project

diy.py

@@ -6,13 +6,28 @@ file1.write('李文：9本\n')
 file1.write('张伟：16本\n')
 file1.write('张伟：16本\n')
 file1.close()
 file1.close()
 
 
+
 with open(r"C:\YTZ\test.txt","a",encoding="utf-8") as file1:
 with open(r"C:\YTZ\test.txt","a",encoding="utf-8") as file1:
     file1.write("李强：16本\n")
     file1.write("李强：16本\n")
 
 
 with open(r"C:\YTZ\test.txt","a",encoding="utf-8") as file1:
 with open(r"C:\YTZ\test.txt","a",encoding="utf-8") as file1:
     file1.write("小丽：11本")
     file1.write("小丽：11本")
  
  
+# with open(r"C:\YTZ\test.txt","r",encoding="utf-8") as file1:
+#     for data in file1:
+#         if "小丽：11本" in data:
+#             print("在数据中")
+
+new_data=""
 with open(r"C:\YTZ\test.txt","r",encoding="utf-8") as file1:
 with open(r"C:\YTZ\test.txt","r",encoding="utf-8") as file1:
     for data in file1:
     for data in file1:
         if "小丽：11本" in data:
         if "小丽：11本" in data:
-            print("在数据中")
+            data=data.replace("小丽：11本","小丽：12本")
\ No newline at end of file
+        new_data +=data
+
+with open(r"C:\YTZ\test.txt","w",encoding="utf-8") as file1:
+    file1.write(new_data)
+
+with open(r"C:\YTZ\test.txt","r",encoding="utf-8") as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file