import pyfits

for framenum in range(7146,7165):

    file_name = 'lm_190224_'+str("{0:0>6d}".format(framenum))+'.fits'

    # read in the file
    sciImg, header = pyfits.getdata(file_name,0,header=True)
    
    # change the PID number
    header["PID"] = 69

    # if the readout is a 16-bit signed integer, keep it that way
    sciImg = sciImg.astype(np.int16)

    hdu = pyfits.PrimaryHDU(sciImg, header=header)
    hdul = pyfits.HDUList([hdu])

    # write new file to a different directory to avoid mistakes
    hdul.writeto("escrow/" + file_name, clobber=False)
    print('Saved ' + file_name)