"Use keyword-collector arguments with deletion and defaults"
import sys

def print3(*args, **kargs):
    sep  = kargs.pop('sep', ' ')
    end  = kargs.pop('end', '\n')
    file = kargs.pop('file', sys.stdout)
    if kargs: raise TypeError(f'extra keywords: {kargs}')
    output = ''
    first  = True
    for arg in args:
        output += ('' if first else sep) + str(arg)
        first = False
    file.write(output + end)