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--- a/examples/creating_ndcube_from_fitsfile.py 2023-03-02 03:43:04.000000000 +0800
+++ b/examples/creating_ndcube_from_fitsfile.py 2023-03-03 12:03:56.485618059 +0800
@@ -19,7 +19,9 @@
# `~ndcube.NDCube` from data stored in a FITS file.
# Here we are using an example file from ``astropy``.
-image_file = get_pkg_data_filename('tutorials/FITS-images/HorseHead.fits')
+# use local fits if no network while doc building
+try: image_file = get_pkg_data_filename('tutorials/FITS-images/HorseHead.fits')
+except Exception: image_file = 'HorseHead.fits'
###########################################################################
# Lets extract the image data and the header information from the FITS file.
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