save project

diy.py

@@ -8,12 +8,14 @@ file1.close()
 with open(r"C:\Users\玛酷市南1号\Desktop\book.txt",'a',encoding='utf-8')as file1:
     file1.write('小强：12本\n')
     file1.write('李明：15本\n')
+ir=''
 with open(r"C:\Users\玛酷市南1号\Desktop\book.txt",'r',encoding='utf-8')as file1:
     for i in file1:
         if '小强：12本' in i:
             i=i.replace("小强：10本",'小强：11本')
         if'小兰：12本' in i:
-            ir=i.replace("小兰：12本",'小兰：14本')
+            i=i.replace("小兰：12本",'小兰：14本')
+        ir+=i
 with open(r"C:\Users\玛酷市南1号\Desktop\book.txt",'w',encoding='utf-8')as file1:
     file1.write(ir)
 with open(r"C:\Users\玛酷市南1号\Desktop\book.txt",'r',encoding='utf-8')as file1: