save project

diy.py

+with open(r'C:\\Users\\xmbc\\Desktop\\book.txt',"r",encoding="utf-8")as file:
+    s=file.read()
+    if '小强:10本' in s:
+        s=s.replace('小强:10','小强:11')
+with open(r'C:\\Users\\xmbc\\Desktop\\book.txt',"w",encoding="utf-8")as file:
+    file.write(s)
\ No newline at end of file