Reading headers from fits files in python -

i'm trying read headers specific fits files in directory. don't want obtain headers every file, specify. here code have far:

import os astropy.io import fits pyfits  def mycode(files):      fits = []     headers = []     in files:         fits.append(i)          j in fits:             if 'rf' in j:                 hdulist = pyfits.open(j)                 header = hdulist[0].header['headername']                 headers.append(header)      return headers  pathway = 'the directory' dirs = os.listdir(pathway)  print mycode(dirs) 

however, when run that, says "no such file or directory" , gives name of 1 of files trying access. appreciate help!

when use pyfits.open(j), python understands file in current directory (the 1 script is). since names of files directory, python doesn`t find them. 1 solution attach directory beginning of every file.