save project

diy.py

+new_data=''
+with open(r'C:\zz\book.txt','r',encoding='utf-8') as filel:
+    for data in filel:
+        if'小强:10本'in data:
+            data=data.replace('小强:10本','小强:11本')
+        if '小兰:12本'in data:
+            data=data.replace('小兰:12本','小兰:14本')
+        new_data +=data
+with open(r'C:\zz\book.txt','w',encoding='utf-8') as filel:
+    filel.write(new_data)
\ No newline at end of file