open

jwst.datamodels.open(init=None, extensions=None, **kwargs)

Creates a DataModel from a number of different types

Parameters:

• init (shape tuple, file path, file object, astropy.io.fits.HDUList,) –

  numpy array, dict, None

  • None: A default data model with no shape
  • shape tuple: Initialize with empty data of the given shape
  • file path: Initialize from the given file (FITS , JSON or ASDF)
  • readable file object: Initialize from the given file object
  • astropy.io.fits.HDUList: Initialize from the given HDUList
  • A numpy array: A new model with the data array initialized to what was passed in.
  • dict: The object model tree for the data model
• extensions (list of AsdfExtension) – A list of extensions to the ASDF to support when reading and writing ASDF files.

Returns:

model

Return type:

DataModel instance