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fix(deps): update dependency astropy to v7 #16

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fix(deps): update dependency astropy to v7 #16

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This PR contains the following updates:

Package Change Age Adoption Passing Confidence
astropy 6.1.7 -> 7.0.0 age adoption passing confidence

Release Notes

astropy/astropy (astropy)

v7.0.0

Compare Source

==========================

New Features

astropy.config
^^^^^^^^^^^^^^

  • Added get_config_dir_path (and get_cache_dir_path) which is equivalent
    to get_config_dir (respectively get_cache_dir) except that it returns a
    pathlib.Path object instead of str. [#​17118]

astropy.coordinates
^^^^^^^^^^^^^^^^^^^

  • BaseCoordinateFrame instances such as ICRS, SkyOffsetFrame, etc.,
    can now be stored directly in tables (previously, they were stored as
    object type columns). Furthermore, storage in tables is now also possible
    for frames that have no data (but which have attributes with the correct shape
    to fit in the table). [#​16831]

  • BaseCoordinateFrame now has a to_table() method, which converts the
    frame to a QTable, analogously to the SkyCoord.to_table() method. [#​17009]

  • SkyCoord, coordinate frames, and representations have all have gained the
    ability to deal with Masked data. In general, the procedure is similar to
    that of Time, except that different representation components do not share
    the mask, to enable holding, e.g., a catalogue of objects in which only some
    have associated distances. [#​17016]

astropy.io.ascii
^^^^^^^^^^^^^^^^

  • Add support for pathlib.Path objects in
    astropy.io.ascii.core.BaseInputter.get_lines. [#​16930]

astropy.io.fits
^^^^^^^^^^^^^^^

  • Expanded FITSDiff output for PrimaryHDU and ImageHDU to include the
    maximum relative and absolute differences in the data. [#​17097]

astropy.io.misc
^^^^^^^^^^^^^^^

  • The HDF5 writer, write_table_hdf5(), now accepts os.PathLike objects
    as output. [#​16955]

astropy.io.votable
^^^^^^^^^^^^^^^^^^

  • Support reading and writing of VOTable version 1.5, including the new
    refposition attribute of COOSYS. [#​16856]

astropy.modeling
^^^^^^^^^^^^^^^^

  • Added Model.has_tied, Model.has_fixed, and Model.has_bounds attributes to make
    it easy to check whether models have various kinds of constraints set without having to
    inspect Model.tied, Model.fixed, and Model.bounds in detail. [#​16677]

  • Added a new parallel_fit_dask function that can be used to fit models to
    many sections (e.g. spectra, image slices) on an N-dimensional array in
    parallel. [#​16696]

  • Added a Lorentz2D model. [#​16800]

  • Added inplace=False/True keyword argument to the __call__ method of most fitters,
    to optionally allow the original model passed to the fitter to be modified with the fitted
    values of the parameters, rather than return a copy. This can improve performance if users
    don't need to keep hold of the initial parameter values. [#​17033]

astropy.stats
^^^^^^^^^^^^^

  • Added a SigmaClippedStats convenience class for computing sigma-clipped
    statistics. [#​17221]

astropy.table
^^^^^^^^^^^^^

  • Changed a number of dict-like containers in io.ascii from OrderedDict to
    dict. The dict class maintains key order since Python 3.8 so OrderedDict is
    no longer needed. The changes are largely internal and should not affect users in any
    way. See also the API change log entry for this PR. [#​16250]

  • Add a keep_order argument to the astropy.table.join function which specifies to
    maintain the original order of the key table in the joined output. This applies for
    inner, left, and right joins. The default is False in which case the output is
    ordered by the join keys, consistent with prior behavior. [#​16361]

astropy.units
^^^^^^^^^^^^^

  • Add a formatter argument to the to_string method of the Quantity
    class. Enables custom number formatting with a callable formatter or
    format_spec, especially useful for consistent notation. [#​16087]

  • Add the unit foe (or Bethe, equivalent to 1e51 erg), which is often used to
    express the energy emitted by a supernova explosion. [#​16441]

  • Add magnetic_flux_field equivalency to convert magnetic field between
    magnetic field strength (H) and magnetic flux density (B). [#​16516]

  • Added SI-units sievert, gray, katal, and hectare in astropy.units.si. [#​16729]

  • When parsing invalid unit strings with u.Unit(..., parse_strict="warn") or
    u.Unit(..., parse_strict="silent"), a normal unit may be returned if the
    problem is not too serious.
    If parsing the string fails completely then an UnrecognizedUnit instance is
    returned, just as before. [#​16892]

  • Added a np.arange dispatch for Quantity (requires one to use
    like=<some_quantity>). [#​17059]

  • Added support for calling numpy array constructors (np.empty, np.ones,
    np.zeros and np.full) with like=Quantity(...) . [#​17120]

  • Added support for calling numpy array constructors (np.array,
    np.asarray, np.asanyarray, np.ascontiguousarray and
    np.asfortranarray) with like=Quantity(...) . [#​17125]

  • Added support for calling numpy array constructors (np.frombuffer,
    np.fromfile, np.fromiter, np.fromstring and np.fromfunction)
    with like=Quantity(...)) . [#​17128]

  • Added support for calling numpy array constructors (np.require,
    np.identity, np.eye, np.tri, np.genfromtxt and np.loadtxt)
    with like=Quantity(...)) . [#​17130]

astropy.utils
^^^^^^^^^^^^^

  • Added the astropy.system_info function to help document runtime systems in
    bug reports. [#​16335]

  • Add support for specifying files as pathlib.Path objects in IERS_A.read
    and IERS_B.read. [#​16931]

astropy.visualization
^^^^^^^^^^^^^^^^^^^^^

  • Add make_rgb(), a convenience
    function for creating RGB images with independent scaling on each filter.
    Refactors make_lupton_rgb() to work with instances of subclasses of
    BaseStretch, including the new Lupton-specific classes
    LuptonAsinhStretch and LuptonAsinhZscaleStretch. [#​15081]

  • Add support for custom coordinate frames for WCSAxes through a context
    manager astropy.visualization.wcsaxes.custom_ucd_coord_meta_mapping. [#​16347]

  • Added get_ticks_position, get_ticklabel_position, and
    get_axislabel_position methods on CoordinateHelper in WCSAxes. [#​16686]

  • Added the ability to disable the automatic simplification of WCSAxes tick labels
    by specifying simplify=False to set_ticklabel() for a coordinate axis. [#​16938]

  • Added the ability to specify that WCSAxes tick labels always include the sign
    (namely for positive values) by starting the format string with a +
    character. [#​16985]

  • Allow astropy.visualization.units.quantity_support to be used as a
    decorator in addition to the already supported use as a context manager. [#​17006]

  • Added the ability to specify a callable function in CoordinateHelper.set_major_formatter [#​17020]

  • Added a SimpleNorm class to create a matplotlib normalization object. [#​17217]

  • WCSAxes will now select which axis to draw which tick labels and axis labels on based on the number of drawn tick labels, rather than picking them in the order they are listed in the WCS. This means that axes may be swapped in comparison with previous versions of Astropy by default. [#​17243]

API Changes

astropy.coordinates
^^^^^^^^^^^^^^^^^^^

  • For non-scalar frames without data, len(frame) will now return the first
    element of its shape, just like for frames with data (or arrays more
    generally). For scalar frames, a TypeError will be raised. Both these
    instead of raising a ValueError stating the frame has no data. [#​16833]

  • The deprecated coordinates.get_moon() function has been removed. Use
    coordinates.get_body("moon") instead. [#​17046]

  • The deprecated BaseCoordinateFrame.get_frame_attr_names() is removed.
    Use get_frame_attr_defaults() instead. [#​17252]

astropy.cosmology
^^^^^^^^^^^^^^^^^

  • Passing redshift arguments as keywords is deprecated in many methods. [#​16597]

  • Deprecated cosmology.utils module has been removed. Any public API may
    be imported directly from the cosmology module instead. [#​16730]

  • Setting Ob0 = None in FLRW cosmologies has been deprecated in favor of Ob0 = 0.0. Conceptually this is a change in that baryons are now always a component of the
    cosmology. Practically, the only change (besides that Ob0 is never None) is that
    methods relying on Ob0 always work, rather than sometimes raising an exception,
    instead by default taking the contribution of the baryons to be negligible. [#​16847]

astropy.io.ascii
^^^^^^^^^^^^^^^^

  • Remove all deprecated arguments from functions within astropy.io.ascii.

    read():

    • Reader is removed. Instead supply the equivalent format argument.
    • Use inputter_cls instead of Inputter.
    • Use outputter_cls instead of Outputter.

    get_reader():

    • Use reader_cls instead of Reader.
    • Use inputter_cls instead of Inputter.
    • Use outputter_cls instead of Outputter.

    write():

    • Writer is removed. Instead supply the equivalent format argument.

    get_writer():

    • Use writer_cls instead of Writer. [#​15758]

astropy.io.fits
^^^^^^^^^^^^^^^

  • The CompImageHDU class has been refactored to inherit from ImageHDU
    instead of BinTableHDU. This change should be for the most part preserve the
    API, but any calls to isinstance(hdu, BinTableHDU) will now return False
    if hdu is a CompImageHDU whereas before it would have returned True.
    In addition, the uint keyword argument to CompImageHDU now defaults to
    True for consistency with ImageHDU. [#​15474]

  • Remove many unintended exports from astropy.io.fits.hdu.compressed.
    The low-level functions compress_image_data and decompress_image_data_section
    are now only available at the qualified names
    astropy.io.fits.hdu.compressed._tiled_compression.compress_image_data
    and astropy.io.fits.hdu.compressed._tiled_compression.decompress_image_data_section.
    The rest of the removed exports are external modules or properly exported
    elsewhere in astropy. May break imports in rare cases that relied
    on these exports. [#​15781]

  • The CompImageHeader class is now deprecated, and headers on CompImageHDU
    instances are now plain Header instances. If a reserved keyword is set on
    CompImageHDU.header, a warning will now be emitted at the point where the
    file is written rather than at the point where the keyword is set. [#​17100]

    • Remove code that was deprecated in previous versions: _ExtensionHDU and
      _NonstandardExtHDU, (Bin)Table.update, tile_size argument for
      CompImageHDU. Also specifying an invalid tile_shape now raises an
      error. [#​17155]

astropy.io.misc
^^^^^^^^^^^^^^^

  • New format "parquet.votable" is added to read and write a parquet file
    with a votable metadata included. [#​16375]

astropy.io.votable
^^^^^^^^^^^^^^^^^^

  • Table.read(..., format='votable'), votable.parse and
    votable.parse_single_table now respect the columns argument and will only output
    selected columns. Previously, unselected columns would just be masked (and unallocated).
    astropy.io.votable.tree.TableElement.create_arrays also gained a colnumbers
    keyword argument to allow column selection. [#​15959]

astropy.modeling
^^^^^^^^^^^^^^^^

  • Subclasses of _NonLinearLSQFitter, so any subclasses of the public LevMarLSQFitter, TRFLSQFitter, LMLSQFitter or DogBoxLSQFitter, should now accept an additional fit_param_indices kwarg in the function signature of their objective_function methods.
    Nothing is needed to be done with this kwarg, and it might not be set, but it can optionally be passed through to fitter_to_model_params_array for a performance improvement.
    We also recommended accepting all kwargs (with **kwargs) in this method so that future additional kwargs do not cause breakage. [#​16673]

  • Exception message for when broadcast shapes mismatch has changed.
    Previously, it used complicated regex to maintain backward compatibility.
    To ease maintenance, this regex has been removed and now directly
    passes exception from numpy.broadcast_shapes function. [#​16770]

  • Using the LMLSQFitter fitter with models that have bounds is now deprecated,
    as support for bounds was very basic. Instead, non-linear fitters with more
    sophisticated support for bounds should be used instead. [#​16994]

  • The optional use_min_max_bounds keyword argument in TRFLSQFitter and
    DogBoxLSQFitter has now been deprecated and should not be used. These
    fitters handle bounds correctly by default and this keyword argument was only
    provided to opt-in to a more basic form of bounds handling. [#​16995]

  • The deprecated comb() function has been removed.
    Use math.comb() from the Python standard library instead. [#​17248]

astropy.stats
^^^^^^^^^^^^^

  • Integer inputs to sigma_clip and SigmaClip are not converted to
    np.float32 instead of float if necessary. [#​17116]

astropy.table
^^^^^^^^^^^^^

  • Change the default type for the meta attribute in Table and Column (and
    subclasses) from OrderedDict to dict. Since Python 3.8 the dict class is
    ordered by default, so there is no need to use OrderedDict.

    In addition the ECSV table writer in astropy.io.ascii was updated to consistently
    write the meta attribute as an ordered map using the !!omap tag. This
    convention conforms to the ECSV specification and is supported by existing ECSV readers.
    Previously the meta attribute could be written as an ordinary YAML map, which is not
    guaranteed to preserve the order of the keys. [#​16250]

  • An exception is now raised when trying to add a multi-dimensional column as an
    index via Table.add_index. [#​16360]

  • Aggregating table groups for MaskedColumn no longer converts
    fully masked groups to NaN, but instead returns a masked element. [#​16498]

  • Always use MaskedQuantity in QTable to represent masked Quantity
    data or when the QTable is created with masked=True. Previously the
    default was to use a normal Quantity with a mask attribute of type
    FalseArray as a stub to allow a minimal level of compatibility for certain
    operations. This update brings more consistent behavior and fixes functions
    like reading of table data from a list of dict that includes quantities with
    missing entries, and aggregation of MaskedQuantity in table groups. [#​16500]

  • Setting an empty table to a scalar no longer raises an exception, but
    creates an empty column. This is to support cases where the number of
    elements in a table is not known in advance, and could be zero. [#​17102]

  • show_in_notebook method for Astropy tables has been un-deprecated and the API has
    been updated to accept a backend keyword and require only keyword arguments. The new
    default backend="ipydatagrid" relies on an optional dependency, ipydatagrid. The
    previous default table viewer (prior to v7.0) is still available as
    backend="classic", but it has been deprecated since v6.1 and will be removed in a future release. [#​17165]

  • The default behavior of Table.pformat was changed to include all rows and columns
    instead of truncating the outputs to fit the current terminal. The new default
    keyword arguments max_width=-1 and max_lines=-1 now match those in
    Table.pformat_all. Since the Table.pformat_all method is now redundant, it is
    pending deprecation. Similarly, the default behavior of Column.pformat was changed
    to include all rows instead of truncating the outputs to fit the current terminal. [#​17184]

astropy.time
^^^^^^^^^^^^

  • Time.ptp now properly emits a deprecation warning independently of NumPy's
    version. This method was previously deprecated in astropy 6.1, but the warning
    was not visible for users that had NumPy 1.x installed. Because of this, the
    warning message was updated to state that Time.ptp is deprecated since
    version 7.0 instead. [#​17212]

astropy.units
^^^^^^^^^^^^^

  • The deprecated Quantity.nansum() method has been removed. Use
    np.nansum instead. [#​15642]

  • The factor parameter of the spectral_density equivalency, the use of
    which has been discouraged in the documentation since version 0.3, is now
    deprecated.
    Use the wav parameter as a Quantity, not as a bare unit. [#​16343]

  • The format.Fits formatter class has been renamed to format.FITS and the
    old name is deprecated.
    Specifying the FITS format for converting Quantity and UnitBase
    instances to and from strings is not affected by this change. [#​16455]

  • Conversion from one unit to another using old_unit.to(new_unit, value) no longer
    converts value automatically to a numpy array, but passes through array duck types
    such as dask arrays, with equivalencies properly accounted for. [#​16613]

  • The format_exponential_notation() method of the Base unit formatter has
    changed.
    Any unit formatters that inherit directly from Base but have not
    implemented their own format_exponential_notation() and wish to retain
    previous behavior should implement it as:

    .. code-block:: python

    def format_exponential_notation(cls, val, format_spec):
    return format(val, format_spec)

    Any formatters that inherit directly from Base and call
    super().format_exponential_notation(val, format_spec) should instead call
    format(val, format_spec)
    The specific unit formatters in astropy.units and custom formatters that
    inherit from any of them are not affected. [#​16676]

  • The deprecated units.format.Unscaled has been removed. Use units.format.Generic
    instead. [#​16707]

  • Added a round() dunder method to Quantity
    in order to support the built-in round() function. [#​16784]

  • For Masked initialization in which a mask is passed in, ensure that that
    mask is combined with any mask present on the input. [#​16875]

  • The get_format_name() method of NamedUnit and its subclasses is
    deprecated.
    The to_string() method can be used instead. [#​16958]

  • The UnitBase.in_units() method is deprecated.
    The to() method can be used as a drop-in replacement. [#​17121]

  • Unit conversions to a given system with unit.to_system(),
    unit.si, and unit.cgs, will now prefer the simplest unit if it
    is in the given system, rather than prioritizing more complicated
    units if those had a base unit component. E.g., u.Pa.si will now
    simply return Unit("Pa") rather than Unit("N / m2"). However,
    the case where a unit can be simply described in base units remains
    unchanged: u.Gal.cgs will still give Unit("cm / s2"). [#​17122]

  • The CDS, OGIP and VOUnit unit formatters are now subclasses of the
    FITS unit formatter. [#​17178]

  • The eV and rydberg units were moved to astropy.units.misc (from
    astropy.units.si and astropy.units.astrophys, respectively).
    Practically, this means that Unit.to_system(u.si) no longer includes
    eV as a SI-compatible unit. [#​17246]

astropy.utils
^^^^^^^^^^^^^

  • IERS_Auto.open() now always returns a table of type IERS_Auto that
    contains the combination of IERS-A and IERS-B data, even if automatic
    updating of the IERS-A file is disabled or if downloading the new file fails.
    Previously, under those conditions, it would return a table of a different type
    (IERS_B) with only IERS-B data. [#​16187]

  • astropy.utils.check_broadcast is now deprecated in favor of
    numpy.broadcast_shapes [#​16346]

  • Added a new keyword pending_warning_type to deprecated decorator so downstream developers could customize the type of warning for pending deprecation state. [#​16463]

  • The introspection.resolve_name() function is deprecated.
    It is better to use the standard library importlib instead. [#​16479]

  • format_exception() is deprecated because it provides little benefit, if
    any, over normal Python tracebacks. [#​16807]

  • The utils.masked module has gained a mixin class, MaskableShapedLikeNDArray,
    as well as two utility functions, get_data_and_mask and combine_masks,
    that can help make a container classes carry masked data. Within astropy, these
    are now used in the implementation of masks for Time. [#​16844]

  • The deprecated compat.override__dir__() utility has been removed. [#​17190]

astropy.visualization
^^^^^^^^^^^^^^^^^^^^^

  • Removed deprecated exp attribute in the LogStretch,
    InvertedLogStretch, PowerDistStretch, and
    InvertedPowerDistStretch stretch classes, and the power
    attribute in the PowerStretch. Instead, use the a attribute,
    which matches the input keyword. [#​15751]

  • Removes the unintended NumPy export previously at astropy.visualization.np. [#​15781]

  • Accessing or setting the following attributes on CoordinateHelper has been deprecated:

    • ticks
    • ticklabels
    • axislabels

    Setting the following attributes on CoordinateHelper directly has been deprecated:

    • parent_axes
    • parent_map
    • transform
    • coord_index
    • coord_unit
    • coord_type (use set_coord_type instead)
    • coord_wrap (use set_coord_type instead)
    • frame
    • default_label

    Accessing or setting the following attributes on CoordinateHelper has been
    removed (without deprecation, as these were clearly internal variables):

    • grid_lines_kwargs
    • grid_lines
    • lblinfo
    • lbl_world
    • minor_frequency (there were already public methods to set/get this) [#​16685]

  • The deprecated nsamples parameter of ZScaleInterval is removed. [#​17186]

astropy.wcs
^^^^^^^^^^^

  • Errors may now occur if a BaseLowLevelWCS class defines
    world_axis_object_components which returns values that are not scalars or
    plain Numpy arrays as per APE 14. [#​16287]

  • WCS.pixel_to_world_values, WCS.world_to_pixel_values,
    WCS.pixel_to_world and WCS.world_to_pixel now correctly return NaN values for
    pixel positions that are outside of pixel_bounds. [#​16328]

Bug Fixes

astropy.io.ascii
^^^^^^^^^^^^^^^^

  • Fix the broken behavior of reading an ASCII table and filling values using column names.
    This PR addresses the issue and improves the functionality. [#​15774]

astropy.io.fits
^^^^^^^^^^^^^^^

  • Fix a number of bugs in CompImageHDU:

    • Fix the ability to pickle CompImageHDU objects
    • Ensure that compression settings are not lost if initializing CompImageHDU
      without data but with compression settings and setting the data later
    • Make sure that keywords are properly updated when setting the header of a
      CompImageHDU to an existing image header.
    • Fix the ability to use CompImageHDU.section on instances that have not yet
      been written to disk
    • Fix the image checksum/datasum in CompImageHDU.header to be those for the
      image HDU instead of for the underlying binary table. [#​15474]

  • Fix a spurious exception when reading integer compressed images with blanks. [#​17099]

  • Fix creating CompImageHDU from header with BSCALE/BZERO: keywords are now
    ignored, as done in ImageHDU. [#​17237]

astropy.io.votable
^^^^^^^^^^^^^^^^^^

  • Making the "votable.parquet" format available as a reader format to ensure
    consistency with the writer formats, even though the format it recognised
    automatically by "votable". [#​16488]

  • Explicitly set usedforsecurity=False when using hashlib.md5. Without this, hashlib.md5 will be blocked in FIPS mode.
    FIPS (Federal Information Processing Standards) is a set of standards created by NIST (National Institute of Standards and Technology) for US government agencies regarding computer security and interoperability.
    This affects validation results ingestion. [#​17156]

astropy.modeling
^^^^^^^^^^^^^^^^

  • Fixed the output representation of models with parameters that have
    units of dimensionless_unscaled. [#​16829]

astropy.stats
^^^^^^^^^^^^^

  • Fixed accuracy of sigma clipping for large float32 arrays when
    bottleneck is installed. Performance may be impacted for computations
    involving arrays with dtype other than float64. This change has no impact
    for environments that do not have bottleneck installed. [#​17204]

  • Fix an issue in sigma-clipping where the use of np.copy() was causing
    the input data mask to be discarded in cases where grow was set. [#​17402]

astropy.table
^^^^^^^^^^^^^

  • Fix a bug where column names would be lost when instantiating Table from a list of Row objects. [#​15735]

  • Aggregating table groups for MaskedColumn now ensures that fully-masked
    groups result in masked elements rather than NaN. [#​16498]

  • Ensure that tables holding coordinates or representations can also be stacked
    if they have zero length. This fix also ensures that the insert method
    works correctly with a zero-length table holding a coordinate object. [#​17380]

  • Fixed table aggregate with empty columns when float is present. [#​17385]

astropy.units
^^^^^^^^^^^^^

  • Allow SI-prefixes for radioactivity units becquerel and curie in astropy.units.si, conforming to BIPM's guidelines for SI units. [#​16529]

  • The OGIP unit parser no longer accepts strings where a component unit is
    followed by a parenthesized unit without a separator in between, such as
    'm(s)' or 'm(s)**2'.
    Such strings are not allowed by the OGIP standard. [#​16749]

  • A few edge cases that could result in a power of a unit to be a numerical value
    from numpy, instead of the intended Python int, float or
    fractions.Fraction instance, have been fixed. [#​16779]

  • The OGIP unit parser now detects negative powers that are not enclosed in
    parenthesis.
    For example, u.Unit("s**-1", format="ogip") now raises an error because the
    OGIP standard expects the string to be written as "s**(-1)" instead, but it
    is still possible to parse the unit with
    u.Unit("s**-1", format="ogip", parse_strict="warn") or
    parse_strict="silent". [#​16788]

  • UnitScaleError can now be imported from the astropy.units namespace. [#​16861]

  • Parsing custom units with u.Unit() using the "vounit" format now obeys
    the parse_strict parameter, unless the custom units are made explicit with
    quotation marks.
    For example, u.Unit("custom_unit", format="vounit") now raises an error,
    but u.Unit("custom_unit", format="vounit", parse_strict="silent") or
    u.Unit("'custom_unit'", format="vounit") do not. [#​17232]

  • It is now possible to use Unit to create dimensionless units with a scale
    factor that is a complex number or a fractions.Fraction instance.
    It was already possible to create such units directly with CompositeUnit. [#​17355]

astropy.utils
^^^^^^^^^^^^^

  • Fixed the unintended behavior where the IERS-A file bundled in astropy-iers-data would be ignored if automatic updating of the IERS-A file were disabled or if downloading the new file failed. [#​16187]

  • Ensure MaskedQuantity can be initialized with a list of masked
    quantities (as long as their shapes match), just like regular
    Quantity and ndarray. [#​16503]

  • For Masked instances, np.put, np.putmask, np.place and
    np.copyto can now handle putting/copying not just np.ma.masked but
    also np.ma.nomask; for both cases, only the mask of the relevant entries
    will be set. [#​17014]

  • Explicitly set usedforsecurity=False when using hashlib.md5. Without this, hashlib.md5 will be blocked in FIPS mode.
    FIPS (Federal Information Processing Standards) is a set of standards created by NIST (National Institute of Standards and Technology) for US government agencies regarding computer security and interoperability.
    This affects download caching. [#​17156]

  • Fixed a bug where an old IERS-A table with stale predictive values could trigger
    the download of a new IERS-A table even if automatic downloading was disabled. [#​17387]

astropy.wcs
^^^^^^^^^^^

  • Avoid a RuntimeWarning in WCS.world_to_array_index by converting
    NaN inputs to int. [#​17236]

Performance Improvements

astropy.io.ascii
^^^^^^^^^^^^^^^^

  • The performance of guessing the table format when reading large files with
    astropy.io.ascii has been improved. Now the process uses at most
    10000 lines of the file to check if it matches the format. This behavior can
    be configured using the astropy.io.ascii.conf.guess_limit_lines
    configuration item, including disabling the limit entirely. [#​16840]

astropy.io.fits
^^^^^^^^^^^^^^^

astropy.modeling
^^^^^^^^^^^^^^^^

  • Improved the performance of 1D models, models with scalar parameters, and models
    without units, when evaluating them with scalar or small arrays of inputs. For
    models that satisfy all of the conditions above, the improvement can be on the
    order of 30-40% in execution time. [#​16670]

  • Performance of most non-linear fitters has been significantly improved by reducing the overhead in evaluating models inside the objective function. [#​16673]

  • Improved the performance of parallel_fit_dask by avoiding unnecessary copies of the
    model inside the fitter. [#​17033]

  • CompoundModel now implements numerical derivatives of parameters when using the +, -, * or / operators. This improves the speed of fitting these models because numerical derivatives of the parameters are not calculated. [#​17034]

astropy.stats
^^^^^^^^^^^^^

  • The performance of biweight_location, biweight_scale,
    biweight_midvariance, and median_absolute_deviation has been improved by
    using the bottleneck nan* functions when available. This requires the
    bottleneck optional dependency to be installed. [#​16967]

astropy.units
^^^^^^^^^^^^^

  • The units.quantity_input decorator has been optimized, especially in the case that no equivalencies are provided to the decorator, and the speed-up is very noticeable when wrapping short functions. [#​16742]

  • Parsing composite units with the OGIP formatter is now up to 25% faster. [#​16761]

  • Parsing units with scale factors is now up to 50% faster. [#​16813]

  • Parsing strings representing non-composite units with Unit is now up to 25%
    faster. [#​17004]

  • Converting composite units to strings with the "cds", "fits",
    "ogip" and "vounit" formatters is now at least twice as fast. [#​17043]

astropy.visualization
^^^^^^^^^^^^^^^^^^^^^

  • Removed redundant transformations when WCSAxes determines the coordinate ranges
    for ticks/gridlines, which speeds up typical plot generation by ~10%, and by
    much more if astropy.visualization.wcsaxes.conf.coordinate_range_samples is
    set to a large value [#​16366]

Other Changes and Additions

  • Updated minimum supported Python version to 3.11. As a result, minimum
    requirements were updated to compatible versions.
    Astropy now requires

    • numpy>=1.23.2
    • PyYAML>=6.0.0
    • packaging>=22.0.0 [#​16903]

  • The minimum supported version of Pandas is now v2.0.
    This is in line with https://scientific-python.org/specs/spec-0000/. [#​16308]

  • Update minimal recommendation for matplotlib from version 3.3.4 to 3.6.0 [#​16557]

  • The Contributor documentation has been significantly improved. It now includes a
    Quickstart Guide with concise instructions on setting up a development environment and
    making a pull request. In addition, the developer documentation was reorganized and
    simplified where possible to improve readability and accessibility. [#​16561]

Configuration

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@renovate renovate bot added the dependencies label Dec 5, 2024
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