save project

diy.py

@@ -4,5 +4,11 @@
 # hhh.write('小丽：11本')
 # hhh.write('李文：9本')
 # hhh.close()
-with open(r'C:\Users\Administrator\Desktop\hhh.txt','a',encoding='utf-8')as hhh:
-    hhh.write('小兰：12本\n')
+h=''
+with open(r'C:\Users\Administrator\Desktop\hhh.txt','r',encoding='utf-8')as hhh:
+    for i in hhh:
+        if '小兰' in i:
+            i=i.replace('12','100000000')
+            h=h+i
+with open(r'C:\Users\Administrator\Desktop\hhh.txt','w',encoding='utf-8')as hhh: 
+    hhh.write(h)
\ No newline at end of file