save project

2.txt

-小赵:99999999999999999999999999999999999999999999999999999999999999999999999999999999本
-小猪:99999999999999999999999999999999999999999999999999999999999999999999999999999999本
+小赵:9本
+小猪:9本

diy2.py

 f=open(r'2.txt','w',encoding='utf-8')
 f=open(r'2.txt','w',encoding='utf-8')
-f.write("小赵:99999999999999999999999999999999999999999999999999999999999999999999999999999999本\n")
-f.write("小猪:99999999999999999999999999999999999999999999999999999999999999999999999999999999本\n")
+f.write("小赵:9本\n")
+f.write("小猪:9本\n")
 f.close()
 f.close()
 
 
+new_data =""
 with open(r'2.txt','r',encoding='utf-8')as f:
 with open(r'2.txt','r',encoding='utf-8')as f:
     for data in f:
     for data in f:
-        if "小猪:99999999999999999999999999999999999999999999999999999999999999999999999999999999本" in data:
+        if "小猪:9本" in data:
             print("存在")
             print("存在")
-    
+            data=data.replace("小猪：9本","小猪：19本")
+        new_data = new_data+data
 
 
+with open(r'2.txt','w',encoding='utf-8') as f:
+    f.write(new_data)
     
     
\ No newline at end of file