save project

rf.py

-
-file1=open(r'C:\Users\Lenovo\Desktop\book.txt','w',encoding='utf-8')
+file1=open(r'C:\Users\Lenovo\Desktop\book.txt','a',encoding='utf-8')
 file1.write('xn:12\n')
 file1.write('xn:12\n')
-file1.write('xl:11\n')
-file1.write('lw:9\n')
-file1.write('zw:12\n')
 file1.close()
 file1.close()
+
+with open(r'C:\Users\Lenovo\Desktop\book.txt','a',encoding='utf-8') as file1:
+    file1.write('xn:12\n')                             
\ No newline at end of file