Syntax error for python 2.help me in this

Python
#1 
dbfile = open(dbfilename, 'w')
for key in db:
    print(key, file=dbfile)

in the above code,how should i write in python 2 for line 3.when i try in python 3 i get no errors but in python 2 i get errors

#2

You would normally do:

dbfile.write(key)

Python 3 might have added the file= option but I don’t use it. I use the file api https://docs.python.org/3/library/io.html#module-io