save project

1.py

+new_data=''
+with open(r'C:\Users\Public\Desktop\jlkfjladfljdfjajafjdk.txt','r',encoding='utf-8') us file
+    for data in file:
+        if'小兰:10本' in data:
+            data=data.replace('小兰:10本','小兰:12本')
+            new_data+=data
+with open(r'C:\Users\Public\Desktop\jlkfjladfljdfjajafjdk.txt','r',encoding='utf-8') us file
+    file.write(new.data)
\ No newline at end of file