save project

02.py

+
+newdata=""
 with open(r"C:\Users\Administrator\Desktop\wuzi.txt","r",encoding="utf-8") as file:
     for data in file:
-        if "小强：10本"  in data:
-            print("小强数据在文件中")
-        if "小兰：12本"  in data:
-            print("小兰数据在文件中")
-        else:
-            print("数据不在文件中")
-            break
\ No newline at end of file
+        if "小强:10本"  in data:
+            data=data.replace("10","11")
+
+        newdata += data
+
+
+with open(r"C:\Users\Administrator\Desktop\wuzi.txt","w",encoding="utf-8") as file:
+    file.write(newdata)
+
+
+with open(r"C:\Users\Administrator\Desktop\wuzi.txt","r",encoding="utf-8") as file:
+    a=file.read()
+    print(a)
\ No newline at end of file