`astropy.io.fits.hdu.hdulist:HDUList.fileinfo`

source: /astropy/io/fits/hdu/hdulist.py :543

Signature

def fileinfo ( self , index )

Summary

Returns a dictionary detailing information about the locations of the indexed HDU within any associated file. The values are only valid after a read or write of the associated file with no intervening changes to the HDUList.

Parameters

index : int: Index of HDU for which info is to be returned.

Returns

fileinfo : dict or None

The dictionary details information about the locations of the indexed HDU within an associated file. Returns None when the HDU is not associated with a file.

Dictionary contents:

========== ========================================================
Key        Value
========== ========================================================
file       File object associated with the HDU
filename   Name of associated file object
filemode   Mode in which the file was opened (readonly,
           update, append, denywrite, ostream)
resized    Flag that when `True` indicates that the data has been
           resized since the last read/write so the returned values
           may not be valid.
hdrLoc     Starting byte location of header in file
datLoc     Starting byte location of data block in file
datSpan    Data size including padding
========== ========================================================

Aliases

astropy.io.fits.HDUList.fileinfo