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

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Note: This PR body was truncated due to platform limits.

This PR contains the following updates:

Package Change Age Confidence
astropy 6.1.7 -> 7.2.0 age confidence

Release Notes

astropy/astropy (astropy)

v7.2.0

Compare Source

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

New Features

astropy.constants
^^^^^^^^^^^^^^^^^

  • Added CODATA 2022 support in astropy.constants.

    This update affects the following constants while the rest are unchanged from CODATA 2018:

    • m_p (Proton mass)
    • m_n (Neutron mass)
    • m_e (Electron mass)
    • u (Atomic mass)
    • eps0 (Vacuum electric permittivity)
    • Ryd (Rydberg constant)
    • a0 (Bohr radius)
    • muB (Bohr magneton)
    • alpha (Fine-structure constant)
    • mu0 (Vacuum magnetic permeability)
    • sigma_T (Thomson scattering cross-section) [#​18118]

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

  • Allow np.concatenate, np.stack and similar numpy functions to
    be applied on representations and differentials.

    They can also be applied to coordinate frames and SkyCoord, though
    with the same limitation as for setting elements of frames and
    coordinates: all frame attributes have to be scalars (or arrays with
    only identical elements). [#​18193]

  • The results of match_coordinates_3d(), match_coordinates_sky(),
    search_around_3d() and search_around_sky() and the corresponding
    SkyCoord methods now have named attributes. [#​18459]

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

  • The trait astropy.cosmology.traits.CurvatureComponent has been added to work with
    objects that have attributes and methods related to the global curvature. [#​18232]

  • The trait astropy.cosmology.traits.HubbleParameter has been added to work with objects that have attributes and methods related to the Hubble parameter. [#​18271]

  • The trait astropy.cosmology.traits.DarkEnergyComponent has been added to work with objects that have attributes and methods related to the Dark Energy component. [#​18447]

  • Cosmology methods now exclusively return arrays, not floats or other scalars. [#​18632]

  • The trait astropy.cosmology.traits.DarkMatterComponent has been added to work with
    objects that have attributes and methods related to dark matter. [#​18760]

  • The trait astropy.cosmology.traits.MatterComponent has been added to work with
    objects that have attributes and methods related to matter density.
    The trait astropy.cosmology.traits.BaryonComponent has been added to work with
    objects that have attributes and methods related to baryonic matter.
    The trait astropy.cosmology.traits.CriticalDensity has been added to work with
    objects that have attributes and methods related to the critical density. [#​18769]

  • The trait astropy.cosmology.traits.PhotonComponent has been added to work with objects that have attributes and methods related to photons. [#​18787]

  • The trait astropy.cosmology.traits.TotalComponent has been added to work with objects that have attributes and methods related to the total density component of the universe. [#​18794]

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

  • CDS table reader will find the metadata for gzipped tables in the accompanying ReadMe file. [#​18506]

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

  • Enable color and suggestion-on-typos in all argparse CLIs for Python 3.14
    (fitscheck, fitsdiff, fitsheader and fitsinfo). [#​18151]

  • Allow reading a FITS file hosted on a cloud resource like Amazon S3 via
    Table.read(). This is done with a new fsspec_kwargs dict argument
    that gets passed through to fsspec to access cloud resources. [#​18379]

  • It is now possible to check the existence of Columns in ColDefs by using the membership operator. [#​18717]

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

  • Added a new ECSV table reading module that supports different backend engines for the
    CSV data parsing. In addition to the default "io.ascii" engine, this includes engines
    that use the PyArrow and Pandas CSV readers. These can be up to 16 times faster and are
    more memory efficient than the native astropy ECSV reader. To get help with this
    interface run Table.read.help(format="ecsv"). [#​18267]

  • Improve support for compressed file formats in the ECSV and the pyarrow CSV
    Table readers. All formats supported by astropy.utils.data.get_readable_fileobj()
    (currently gzip, bzip2, lzma (xz) or lzw (Z)) will now work with these readers. [#​18712]

astropy.io.registry
^^^^^^^^^^^^^^^^^^^

  • Allow setting EXTNAME when writing a Table to a FITS file, e.g.
    tbl.write("filename.fits", name="CAT", append=True). [#​18470]

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

  • Enable color and suggestion-on-typos in volint CLI for Python 3.14 [#​18151]

  • Modified the constructor for astropy.io.votable.tree.TableElement to use the version configuration information from the parent VOTableFile instance. This allows for better handling of version-specific features and ensures that the table element is created with the correct context regarding the VOTable version. [#​18366]

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

  • Add support for unit change propagation through the | (model composition) operator,
    using either ~astropy.modeling.compose_models_with_units or by setting the
    unit_change_composition attribute on the model after composition. [#​17304]

astropy.nddata
^^^^^^^^^^^^^^

  • The interpret_bit_flags function now strips whitespace from flag names. [#​18205]

astropy.samp
^^^^^^^^^^^^

  • Enable color and suggestion-on-typos in samp_hub CLI for Python 3.14 [#​18151]

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

  • Enable color and suggestion-on-typos in showtable CLI for Python 3.14 [#​18151]

  • Added generic from_df and to_df methods to astropy.Table using
    narwhals. These methods provide a unified interface for converting between
    Astropy Tables and various DataFrame formats (pandas, polars, pyarrow, etc.)
    through the narwhals library. The to_df method converts an Astropy Table
    to any supported DataFrame format, while from_df creates an Astropy Table
    from any narwhals-compatible DataFrame. Narwhals is a lightweight compatibility
    layer that provides a unified API across different DataFrame libraries, allowing
    seamless interoperability without requiring all DataFrame libraries as dependencies. [#​18435]

  • Setting the units or descriptions of QTable and Table
    has been made more flexible for tables with optional columns that may
    or may not appear in the data. This applies to directly creating a table
    as well as reading formatted data with the read() method.

    In both cases you can supply units and description arguments as a
    dict that specifies the units and descriptions for column names in
    the table. Previously, if the input table did not contain a column that
    was specified in the units or description dict, a ValueError
    was raised. Now, such columns are simply ignored. [#​18641]

  • A new method has been added for accessing a table index for tables with multiple
    indices. You can now select the index with the with_index(index_id) method of the
    .loc, .iloc, and .loc_indices properties. For example, for a table t
    which has two indices on columns "a" and "b" respectively,
    t.loc.with_index("b")[2] will use index "b" to find all the table rows where
    t["b"] == 2. Doing this query using the previous syntax t.loc["b", 2] is
    deprecated and this functionality is planned for removal in astropy 9.0.

    In addition, support has been added for using .loc, .iloc, and .loc_indices
    with an index based on two or more key columns. Previously this raised a ValueError. [#​18680]

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

  • Allow np.concatenate, np.stack and similar numpy functions to
    be applied on Time and TimeDelta instances. [#​18193]

  • Add a new time format galex for the GALEX satellite.

    In GALEX data, due to uncertainty in the spacecraft clock, the absolute time is only accurate to
    about 1-10 seconds while the relative time within an observation is better than 0.005 s or so,
    except on days with leap seconds, where relative times can be wrong by up to 1 s.
    See question 101.2 in https://www.galex.caltech.edu/researcher/faq.html [#​18330]

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

  • Some unit formats have deprecated units and converting such units to strings
    emits a warning.
    The new deprecations parameter of the unit to_string() methods allows
    automatically converting deprecated units (if possible), silencing the warnings
    or raising them as errors instead. [#​18586]

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

  • Enable color and suggestion-on-typos in fits2bitmap CLI for Python 3.14 [#​18151]

  • Added show_decimal_unit to set_major_formatter to control whether
    or not units are shown in decimal mode. [#​18312]

  • Added the methods set_visible() and set_position() to control the visibility and position of ticks, tick labels, and axis labels in a single call.

    Also added get_ticks_visible(), get_ticklabel_visible(), and get_axislabel_visible() methods to get the visibility state of each coordinate element. [#​18443]

  • Added an image interval option (SymmetricInterval) for specifying a
    symmetric extent about a midpoint, and the extent that contains both the image
    minimum and maximum can be automatically determined. [#​18602]

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

  • Enable color and suggestion-on-typos in all wcslint CLI for Python 3.14 [#​18151]

  • Added a perserve_units keyword argument to WCS to optionally request
    that units are not converted to SI (the default behavior is for celestial axes
    to have units converted to degrees, and spectral axes to m or Hz). [#​18338]

API Changes

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

  • The functionality of astropy.coordinates.concatenate and
    astropy.coordinates.concatenate_representations is now available using
    np.concatenate. Hence, these functions are being deprecated, emitting an
    AstropyPendingDeprecationWarning starting with astropy 7.2. This will be
    followed by a regular deprecation warning in astropy 8.0, and removal in 9.0. [#​18193]

  • The matrix_utilities module was not included in the astropy API
    documentation, but it was nonetheless explicitly referred to in some of the
    other documentation.
    This made it unclear if the functions in the module are public or private.
    The public matrix utilities is_rotation_or_reflection() and
    rotation_matrix() have been made available from the astropy.coordinates
    namespace and should be imported from there.
    Functions not available from the astropy.coordinate namespace are private
    and may be changed or removed without warning.
    However, three functions have been explicitly deprecated, despite being
    private, as a courtesy to existing users.
    matrix_utilites.angle_axis() and matrix_utilites.is_rotation() are
    deprecated without replacement.
    matrix_utilities.is_O3() is deprecated and the public
    is_rotation_or_reflection() function can be used as a replacement. [#​18418]

  • The undocumented earth_orientation module has been removed. [#​18638]

  • astropy prefers reading data required for EarthLocation.of_site() from
    a local cache and tries downloading (and caching) the data from the Internet if
    the cache is empty.
    As a last resort astropy has so far read a small bundled data file that
    provided data for Greenwich as the single entry, but now astropy will raise
    an error. [#​18649]

astropy.io.registry
^^^^^^^^^^^^^^^^^^^

  • UnifiedInputRegistry and UnifiedOutputRegistry's delay_doc_updates
    method's effect is disabled under Python's optimized mode (-OO flag). [#​17572]

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

  • Added a config property to astropy.io.votable.tree.VOTableFile.
    This property can be passed to the config parameter of constructors that need to know the associated VOTable version, such as TimeSys and CooSys. [#​18366]

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

  • Add additional detail to the text of the ValueError that is raised when
    pprint cannot parse a column format string. [#​17631]

  • Selecting a table index in the .loc, .iloc, or .loc_indices properties by
    passing the index identifier as the first element of the item is deprecated and is
    planned for removal in astropy 9.0. For example, if a table t has two indices on
    columns "a" and "b" respectively, then t.loc["b", 2] (to find table rows
    where t["b"] == 2) is deprecated. This is replaced by t.loc.with_index("b")[2]. [#​18680]

astropy.tests
^^^^^^^^^^^^^

  • API changes towards a future deprecation of astropy test runner:

    • astropy.tests.runner.keyword is removed from public API.
      It is used internally as a decorator within astropy test runner and
      its exposure as public API was a mistake. In the future, it will be
      removed without any deprecation.
    • astropy.test, astropy.tests.runner.TestRunnerBase, and astropy.tests.runner.TestRunner
      are now pending deprecation (AstropyPendingDeprecationWarning).
      This will also affect downstream packagename.test generated using TestRunner.
      They may start to emit AstropyDeprecationWarning in v8.0 (but no earlier). [#​17874]

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

  • The isiterable() utility is deprecated.
    numpy.iterable() can be used as a drop-in replacement. [#​18053]

  • astropy.utils.metadata.MergeStrategy no longer modifies the merge()
    methods of its subclasses at runtime to re-raise all exceptions as
    MergeConflictError.
    This does not affect the functionality of MergeStrategy subclasses within
    the astropy metadata merging machinery. [#​18518]

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

  • A warning is now emitted for each axis name which is
    invalid in set_ticklabel_position, set_axislabel_position,
    and set_ticks_position. This is a deprecation warning,
    and in future invalid axis names will result in an error. [#​18324]

  • A warning is now emitted if arguments are given to the getter method
    get_axislabel_visibility_rule. This is a deprecation warning, and in
    future, giving arguments to this method will result in an error. [#​18792]

Bug Fixes

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

  • get_config_dir() and get_cache_dir() now emit warnings in all cases
    where the XDG_CACHE_HOME (XDG_CONFIG_HOME, respectively) environment
    variable doesn't meet internal assumptions and is ignored as a result. [#​17934]

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

  • The angle argument of the rotation_matrix() function can now be any
    angle-like value, like its docstring states.
    Previously some angle-like values (e.g. angle-like strings) were erroneously
    rejected. [#​18504]

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

  • Fix bug with heap which was not updated after a VLA column is modified. [#​18487]

  • Make fitscheck verify all HDUs before listing errors. [#​18574]

  • Fix calculation of DATASUM/CHECKSUM for heap data in BinTableHDU. [#​18681]

  • Fixed a bug in fitsdiff script where failing to read a single file could
    crash the entire program. A warning is now printed instead, and such files
    are simply ignored. [#​18882]

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

  • Fixed a bug where writing a table to ECSV fails if meta
    contains a value that is a numpy string. [#​18677]

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

  • Updated IVOA UCD1+ controlled vocabulary from version 1.5 to 1.6. This adds
    support for new atmospheric observation terms including obs.atmos.wind,
    obs.atmos.humidity, obs.atmos.rain, obs.atmos.turbulence,
    obs.atmos.turbulence.isoplanatic, obs.atmos.water, and
    phys.temperature.dew which are now recognized when parsing UCDs with
    check_controlled_vocabulary=True. [#​18483]

  • Fixed a bug in add_data_origin_info() where content is ignored for some INFO names. [#​18771]

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

  • Fixed a bug in modeling.tabular models when the lookup_table is a Quantity, where the result might lose its unit in some cases. [#​18958]

astropy.nddata
^^^^^^^^^^^^^^

  • Fixed unexpected upcasting to 64 bits when doing arithmetic with Python scalars
    on numpy 2.

    Don't upcast NDData unnecessarily when doing arithmetic involving a single
    unit (consistent with the behaviour when there are no units). Upcasting still
    occurs if an operand's unit gets converted to match the other, or where
    required by the other operand's dtype. [#​18392]

astropy.samp
^^^^^^^^^^^^

  • SAMPHubServer._call_and_wait raises a new SAMPProxyTimeoutError (derived from SAMPProxyError) exception on timeout.
    This allows client code to more easily distinguish timeouts from other kind of exceptions. [#​18169]

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

  • poisson_conf_interval kraft-burrows-nousek no longer fails for large N. [#​18676]

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

  • Fix a bug when slicing a table that has a multi-column index. Previously, after slicing
    the table then tbl.indices would show duplicates of the multi-column index, one for
    each column in the index. The underlying indices on the index columns were incorrectly
    distinct objects instead of the expected reference to a single index object. [#​18694]

  • Fix bugs when indexing a QTable with a Quantity column. Previously, after adding
    the index then indexed item access via with a Quantity or slicing was failing. [#​18725]

  • Fix a bug where the ECSV writer was not correctly quoting column names if the first name
    starts with the "#" character or any names contain leading/trailing whitespace. In this
    situation, all column names are now surrounded by double quotes per the ECSV standard.
    Likewise the ECSV reader was incorrectly stripping surrounding whitespace from column
    names, leading to a consistency check failure when reading. [#​18752]

  • Fixed a bug when writing Table to FITS files, if the table contained masked arrays of integers. [#​18818]

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

  • The string representations of the liter with the different astropy unit
    formatters are now more consistent with each other.
    This change only affects converting units to strings, it has no effect on
    parsing strings to units. [#​18500]

  • So far only the "cds" unit format has been capable of parsing the string
    "as" as the attosecond, but now the other unit formats recognize that
    string too. [#​18723]

  • The "ogip" unit formatter can now parse strings that include signed
    fractions in the exponent, e.g. u.Unit("m**(-1/2)", format="ogip"). [#​18776]

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

  • If numpy.msort() is called with a Masked array then astropy no
    longer erroneously hides the deprecation warning (with numpy versions
    1.24-1.26). [#​18173]

  • For numpy < 2.0, applying np.atleast_*d to iterables of most astropy
    classes will now return a list of instances instead of a tuple, to match the
    behaviour for arrays. For numpy >= 2.0, tuples continue to be returned. [#​18193]

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

  • Fixed an image-normalization bug where the interval on a ImageNormalize
    instance could be ignored when plotting. [#​18590]

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

  • Fixed a bug that caused world_to_array_index to return lists instead of Numpy arrays. [#​18730]

Other Changes and Additions

  • The minimum required NumPy version is now 1.24. [#​18160]

  • The minimum required Matplotlib version is now 3.8.0. [#​18164]

  • Bundled expat is updated to version 2.7.3. [#​18657]

  • Updated the bundled CFITSIO library to 4.6.3. [#​18689]

  • Wheels are now provided for Windows arm64. [#​18786]

v7.1.1

Compare Source

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

Bug Fixes

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

  • Writing zero-row BinTableHDU with string columns no longer raises a broadcast error in _ascii_encode() [#​18230]

  • Compute maximum absolute and relative differences reported by ImageDataDiff
    on the full arrays instead of only a few values. [#​18451]

  • Fix slicing FITS compressed file with .section when data is scaled. [#​18640]

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

  • Fixed a bug where coordinate frame objects could not be serialized to YAML. This caused
    an exception when saving a SkyCoord object in particular frames like
    galactocentric in which frame attributes are themselves a frame. [#​18526]

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

  • Fix handling of bounded variable-length char arrays in BINARY2 format which were previously treated as fixed length. [#​18105]

astropy.nddata
^^^^^^^^^^^^^^

  • Fixed key error with numpy functions np.min, np.max, np.mean, and np.sum. [#​18424]

  • Fix partial cutouts with FITS compressed file and scaled data. [#​18640]

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

  • Fixed a bug in table.table_helpers.ArrayWrapper where byteorder of the
    underlying data was not necessarily preserved through roundtrips. [#​18139]

  • Fix bug #​10732 where removing rows on an indexed table that was subsequently sliced
    (e.g. t.add_index("a"); ts = t[1:5]; ts.remove_row(2)) was giving incorrect results
    or failing. [#​18511]

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

  • Ensure that the fast C parser for Time works also with numpy 2.3.0, fixing
    a bug in our implementation which had no effect in previous numpy versions. [#​18265]

astropy.timeseries
^^^^^^^^^^^^^^^^^^

  • Fixed the aggregate_downsample performance degradation when
    non-default aggregate_func is used. [#​18188]

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

  • Fixed the LaTeX representation of DexUnit in astropy.units,
    and thus also how it is represented in, e.g., jupyter notebooks. [#​18627]

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

  • Fix a bug that caused WCSAxes.get_transform to not return the correct
    transform when using WCS instances with celestial axes that were not in
    degrees. [#​18311]

  • Fixed a bug that under certain conditions could lead to ticks being incorrectly
    labelled with a single "$" dollar sign in WCSAxes. [#​18313]

  • Fixed WCSAxes.get_transform() in the case of 1D WCS [#​18327]

  • Fixed a bug that caused the default format unit to be incorrect for RA/Dec WCSes with non-degree units [#​18346]

  • Fix a bug where the units of the values= keyword argument to set_ticks was not respected. [#​18577]

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

  • Fixed an issue which caused calls to WCS coordinate conversion routines to not be thread-safe due to calls to WCS.wcs.set() from multiple threads. [#​16411]

  • Fix a bug that caused the output of WCS.wcs.print_contents() to be truncated
    and to then cause the output of subsequent print_contents() calls (on
    WCS.wcs or other wcs objects such as WCS.wcs.wtb) to be corrupted. [#​18350]

  • Fixed a bug in WCS.pixel_to_world for spectral WCS where restfrq was
    defined but CTYPE was VOPT, and likewise where restwav was defined but
    CTYPE was VRAD. [#​18352]

  • Fixed a bug where world->pixel conversions did not work correctly on a 1D WCS
    sliced via SlicedLowLevelWCS. [#​18394]

  • Fixed a bug that caused slicing of WCS objects with an ellipsis to not return a WCS
    object but instead a SlicedLowLevelWCS object. [#​18417]

  • Fixed a bug in wcs.py that caused the WCS object to not properly initialize
    the _naxis attribute when the header was empty or did not contain any WCS
    information. This could lead to crashes when attempting to take a slice of a 3D
    WCS object or it could lead unexpected behavior when accessing pixel shape
    or other properties that depend on the number of axes. [#​18419]

  • Fixed a race condition when using the APE-14 API for the WCS class in a multi-threaded environment. [#​18692]

Performance Improvements

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

  • Improved performance of modeling.rotations.spherical2cartesian() by 11-18% depending on the size of the input data arrays. [#​18238]

Other Changes and Additions

  • Fixed errors with building the package from source on Windows via
    python -m build and similar commands. [#​18253]

  • Pre-built binaries (wheels) for Linux are now built using the manylinux_2_28
    image (previously, manylinux2014 was used). [#​18374]

v7.1.0

Compare Source

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

New Features

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

  • search_around_sky and search_around_3D now accept separations/distlimits
    broadcastable to the same shape as coords1. [#​17824]

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

  • Add functionality to read and write to a Table from the TDAT format as part of
    the Unified File Read/Write Interface. [#​16780]

  • io.ascii now supports on-the-fly decompression of LZW-compressed files
    (typically ".Z" extension) via the optional package uncompresspy. [#​17960]

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

  • Astropy can now not only read but also write headers that have HIERARCH
    keys with long values, by allowing the use of CONTINUE cards for those
    (as was already the case for regular FITS keys). [#​17748]

  • Add strip_spaces option to Table.read to strip trailing whitespaces in
    string columns. This will be activated by default in the next major release. [#​17777]

  • io.fits now supports on-the-fly decompression of LZW-compressed files
    (typically ".Z" extension) via the optional package uncompresspy. [#​17960]

  • io.fits now supports on-the-fly decompression of LZMA-compressed files
    (typically ".xz" extension) if the lzma module is provided by the Python
    installation. [#​17968]

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

  • Add a fast Table CSV reader that uses the PyArrow read_csv() function. This can
    be significantly faster and more memory-efficient than the astropy.io.ascii fast
    reader. This new reader can be used with Table.read() by setting
    format="pyarrow.csv". [#​17706]

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

  • New module astropy.io.votable.dataorigin to extract Data Origin information from INFO in VOTable. [#​17839]

  • CooSys VOTable elements now have a method to_astropy_frame that returns the
    corresponding astropy built-in frame, when possible. [#​17999]

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

  • Added a fit_info= keyword argument to parallel_fit_dask to allow users to preserve fit information from each individual fit. [#​17538]

astropy.nddata
^^^^^^^^^^^^^^

  • Adds a utility class, astropy.nddata.Covariance, used to construct, access,
    and store covariance matrices. The class depends on use of the scipy.sparse
    module. [#​16690]

  • Add the limit_rounding_method parameter to ~astropy.nddata.Cutout2D,
    ~astropy.nddata.overlap_slices, ~astropy.nddata.extract_array, and
    ~astropy.nddata.add_array to allow users to specify the rounding method
    used when calculating the pixel limits of the cutout. The default method
    is to use ~numpy.ceil. [#​17876]

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

  • Document that Table.group_by's underlying sorting algorithm is guaranteed
    to be stable. This reflects behavior that was already present but undocumented,
    at least since astropy 6.0 . [#​17676]

astropy.timeseries
^^^^^^^^^^^^^^^^^^

  • Downsampling now works correctly also on MaskedColumn and
    MaskedQuantity with possibly masked elements. Furthermore, the type of
    (Masked) column will now be properly preserved in downsampling. [#​18023]

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

  • Units with the "micro" prefix can now be imported using "μ" in the name.
    For example, the microgram can now be imported with
    from astropy.units import μg. [#​17651]

  • It is now possible to import angström, litre and ohm from astropy.units
    using the Å, ℓ and Ω symbols. [#​17829]

  • Unit conversions between kelvins and degrees Rankine no longer require the
    temperature equivalency. [#​17985]

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

  • Make commonly used Masked subclasses importable for ASDF support.

    Registered types associated with ASDF converters must be importable by
    their fully qualified name. Masked classes are dynamically created and have
    apparent names like astropy.utils.masked.core.MaskedQuantity although
    they aren't actually attributes of this module. Customize module attribute
    lookup so that certain commonly used Masked classes are importable.

    See:

  • astropy.utils.data.download_file can now recover from a TimeoutError
    when given a list of alternative source URLs. Previously, only URLError
    exceptions were recoverable. An exception is still being raised after trying all
    URLs provided if none of them could be reached. [#​17691]

  • utils.data now supports on-the-fly decompression of LZW-compressed files
    (typically ".Z" extension) via the optional package uncompresspy. [#​17960]

API Changes

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

  • On representations the method get_name has been deprecated in favor of the class-level
    attribute name. The method will be removed in a future release. [#​17503]

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

  • A new public module, astropy.cosmology.io, has been added to provide support
    for reading, writing, and converting cosmology instances.

    The private modules astropy.cosmology.funcs,
    astropy.cosmology.parameter, astropy.cosmology.connect,
    astropy.cosmology.core, and astropy.cosmology.flrw have been deprecated.
    Their functionality remains accessible in the astropy.cosmology module or in
    the new astropy.cosmology.io module. [#​17543]

  • Comoving distances now accept an optional 2nd argument, where the two-argument form is
    the comoving distance between two redshifts. The one-argument form is the comoving
    distance from redshift 0 to the input redshift. [#​17701]

  • A new public module, astropy.cosmology.traits, has been added to provide building
    blocks for custom cosmologies. The currently available traits are:

    • astropy.cosmology.traits.ScaleFactor
    • astropy.cosmology.traits.TemperatureCMB [#​17702]

astropy.extern
^^^^^^^^^^^^^^

  • Astropy used to bundle the javascript libraries jQuery and DataTables for
    interactive (e.g. sorting by column values) tables using the show_in_browser()
    method.
    This bundling requires relatively large files in astropy itself, for a relatively minor feature.
    Furthermore, the astropy developers are not experts in javascript development, and
    javascript libraries many need updates to improve on security vulnerabilities.
    This change removes the bundled versions of jQuery and DataTables from astropy,
    updates the default version of the remote URLs to version 2.1.8 of DataTables, and
    sets the default for show_in_browser(use_local_files=False) to use the remote versions
    in all cases. If the method is called with use_local_files=True, a warning is
    displayed and remote version are used anyway.
    This may break the use of the method when working offline, unless the javascript
    files are cached by the browser from a previous online session. [#​17521]

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

  • showtable CLI is now deprecated to avoid a name clash on Debian; use showtable-astropy instead. [#​18047]

  • Fix issues in the handling of a call like tbl.loc[item] or tbl.loc_indices[item]
    and make the behavior consistent with pandas. Here tbl is a Table or QTable
    with an index defined.

    If item is an empty list or zero-length np.ndarray or an empty slice, then
    previously tbl.loc[item] would raise a KeyError exception. Now it returns the
    zero-length table tbl[[]].

    If item is a one-element list like ["foo"], then previously
    tbl.loc[item] would return either a Row or a Table with multiple row,
    depending on whether the index was unique. Now it always returns a Table, consistent
    with behavior for tbl.loc[[]] and tbl.loc[["foo", "bar"]].

    See #​18051 for more details. [#​18051]

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

  • Passing fraction='multiline' to unit.to_string() will no longer raise
    an exception if the given format does not support multiline fractions, but
    rather give a warning and use an inline fraction. [#​17374]

  • Automatic conversion of a str or bytes instance to a unit when it is
    multiplied or divided with an existing unit or quantity is deprecated. [#​17586]

  • Accessing the contents of the units.deprecated module now emits deprecation
    warnings.
    The module may be removed in a future version. [#​17929]

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

  • All arguments from simple_norm are marked as future keyword-only, with the
    exception of the first two (data and stretch).
    A warning is now displayed if any other arguments are passed positionally. [#​17489]

Bug Fixes

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

  • Fix possible int overflow in the tile compression C code. [#​17995]

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

  • In CooSys elements, the system was not checked for votable version 1.5 [#​17999]

astropy.samp
^^^^^^^^^^^^

  • Fix setting logging level from the samp_hub command line.
    Previously, samp_hub --log-level OFF was documented as supported but actually caused an exception to be raised.
    The patch infers valid choices from the standard library's logging module.
    A CRITICAL level will closely emulate the intended OFF setting. [#​17673]

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

  • Initializing a Table with rows or data set to [] or a numpy array with
    zero size (e.g., np.array([[], []])) is now equivalent to
    Table(data=None, ...) and creates a table with no data values. This allows
    defining the table names and/or dtype when creating the table, for instance:
    Table(rows=[], names=["a", "b"], dtype=[int, float]). Previously this
    raised an exception. [#​17717]

  • Fix issues in the handling of a call like tbl.loc[item] or tbl.loc_indices[item]
    and make the behavior consistent with pandas. Here tbl is a Table or QTable
    with an index defined.

    If item is an empty list or zero-length np.ndarray or an empty slice, then
    previously tbl.loc[item] would raise a KeyError exception. Now it returns the
    zero-length table tbl[[]].

    If item is a one-element list like ["foo"], then previously
    tbl.loc[item] would return either a Row or a Table with multiple row,
    depending on whether the index was unique. Now it always returns a Table, consistent
    with behavior for tbl.loc[[]] and tbl.loc[["foo", "bar"]].

    See #​18051 for more details. [#​18051]

astropy.timeseries
^^^^^^^^^^^^^^^^^^

  • Made TimeSeries.from_pandas and BinnedTimeSeries.read more robust to
    subclassing. [#​17351]

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

  • For the Angstrom unit in the CDS module, u.cds.Angstrom, the string
    representation is now "Angstrom" (instead of "AA"), consistent with what was
    always the case for u.Angstrom, and conformant with the CDS standard. [#​17536]

  • Previously the string representation of the solMass unit in the "cds"
    format depended on whether the unit was imported directly from units or
    from units.cds.
    Although both representations were valid according to the CDS standard, the
    inconsistency was nonetheless needlessly surprising.
    The representation of units.cds.solMass has been changed to match the
    representation of units.solMass. [#​17560]

  • The degrees Rankine is now represented as "$\mathrm{{}^{\circ}R}$" in the
    "latex" and "latex_inline" formats and as "°R" in the "unicode"
    format. [#​18049]

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

  • Properly detect invalid LZMA files in utils.data. [#​17984]

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

  • Fixed an issue when using plot_coord after slicing the WCS object coordinates. [#​18005]

Performance Improvements

astropy.timeseries
^^^^^^^^^^^^^^^^^^

  • Improved the aggregate_downsample performance using a new default aggregate_func. [#​17574]

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

  • Converting strings to units with Unit() is now up to 225% faster. [#​17399]

  • UnitBase.compose() is now 20% faster. [#​17425]

Other Changes and Additions

  • After import astropy, dir(astropy) will now list all subpackages,
    including those that have not yet been loaded. This also means tab
    completion will work as expected (e.g., from astropy.coo<TAB> will
    expand to from astropy.coordinates). [#​17598]

  • Updated bundled WCSLIB version to 8.4, fixing issues in wcs_chksum
    and wcs_fletcher32. For a full list of changes - see
    astropy/cextern/wcslib/CHANGES. [#​17886]

v7.0.2

Compare Source

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

Bug Fixes

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

  • Fix a bug where config file generation did not parse nested subclasses of astropy.config.ConfigNamespace. [#​18107]

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

  • Fix a bug in nddata.Cutout2D when creating partial cutouts of Section objects by adding a dtype property to the Section class. [#​17611]

  • Fixed a bug so that now the scaling state from the source HDU to the new appended HDU is copied on the
    destination file, when the HDU is read with do_not_scale_image_data=True. [#​17642]

  • Fix setting a slice on table rows (FITS_record). [#​17737]

  • Fix checksum computation for tables with VLA columns, when table is loaded in
    memory. [#​17806]

  • Fix .fileinfo() for compressed HDUs. [#​17815]

  • Fix FITS_rec repr when a column has scaling factors, leading to a crash with
    numpy>=2.0. [#​17933]

  • Fixed a bug that caused THEAP, ZBLANK, ZSCALE, and ZZERO to not be correctly
    removed during decompression of tile-compressed FITS files. [#​18072]

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

  • astropy v7.0.0 erroneously refused to write a VOTable if it contained units that
    could not be represented in the CDS format.
    Now astropy correctly chooses the unit format based on the VOTable version.
    The bug in question did not cause any corruption in tables that were successfully
    written because the newer VOUnit format is backwards compatible with the CDS format.
    Furthermore, any unit that is in neither formats would still be written out
    but would issue a warning. [#​17570]

  • unicodeChar fields can now be of bounded variable size (arraysize="10*). [#​18075]

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

  • Fixed an issue where the filter_non_finite option was not working
    for 2D models. An error is raised when the filter_non_finite option
    is set to True and all values are non-finite. [#​17869]

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

  • Now bayesian_blocks(t, x, fitness="events") correctly handles the case
    when the input data x contains zeros. [#​17800]

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

  • Prevent corrupting a column by mutating its name to an invalid type.
    A TypeError is now raised when a name is set to anything other than a
    string. [#​17450]

  • Fix a bug in creating a Table from a list of rows that dropped the units
    of non-scalar Quantity, e.g., Table(rows=[([1] * u.m,), ([2] * u.m,)]). [#​17936]

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

  • Ensured that the units of yp, refa and refb are properly
    taken into account when calling erfa.apio (previously, the
    conversion required for xp was applied to those inputs too). [#​17742]

  • The machinery that injects units into a namespace (used e.g. by def_unit())
    now applies NFKC normalization to unit names when checking for name collisions.
    This prevents name collisions if the namespace belongs to a module and the unit
    is accessed as an attribute of that module. [#​17853]

  • The string representations of the prefixed versions of solLum, solMass
    and solRad units can now be parsed by default.
    Previously they could only be parsed if the required_by_vounit module had
    been imported, possibly indirectly by using the "vounit" format. [#​17868]

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

  • Prevent corrupting a mixin column's info attribute by mutating its name to
    an invalid type. A TypeError is now raised when a name is set to anything
    other than a string. [#​17450]

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

  • Ensure that the astropy.visualization.wcsaxes.custom_ucd_coord_meta_mapping
    context manager performs a (correct) cleanup. [#​17749]

  • Fixed interval classes for masked input (MaskedArray and MaskedNDArray). [#​17927]

  • Fixed the limits of a parameter in the PowerDistStretch
    and InvertedPowerDistStretch classes so that a value of
    0 in no longer allowed. That value gives infinity values in
    InvertedPowerDistStretch and it makes the PowerDistStretch
    results independent of the input data. [#​17941]

  • Fixed an issue where LinearStretch values were not being clipped to
    [0:1] when clip=True. [#​17943]

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

  • Fix UCD for air wavelengths, following the IVOA recommendation that 'em.wl'
    be reserved for vacuum wavelengths. 'em.wl;obs.atmos' is now used to
    represent air wavelengths instead. [#​17769]

Other Changes and Additions

  • Updated the bundled CFITSIO library to 4.6.0. [#​17904]

v7.0.1

Compare Source

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

API Changes

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

  • The use of the keyword use_local_files for the js viewer in
    astropy.table.Table.show_in_browser is now deprecated. Starting in Astropy
    7.1 this keyword will be ignored and use of it will issue a warning. The
    default behavior will be to use the remote versions of jQuery and DataTables
    from a CDN. [#​17480]

Bug Fixes

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

  • With astropy v7.0.0 the cache directory cannot be customized with the
    XDG_CACHE_HOME environment variable.
    Instead, XDG_CONFIG_HOME erroneously controls both configuration and cache
    directories.
    The correct pre-v7.0.0 behaviour has been restored, but it is possible that
    astropy v7.0.0 has written cache files to surprising locations.
    Concerned users can use the get_cache_dir_path() function to check where
    the cache files are written.

    The bug in question does not affect systems where the XDG_CACHE_HOME and
    XDG_CONFIG_HOME environment variables are unset. [#​17514]

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

  • Fixed a numerical-precision bug with the calculation of the theta
    component when converting from CylindricalRepresentation to
    PhysicsSphericalRepresentation for vectors very close to the Z axis (within
    milliarcseconds). [#​17693]

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

  • Fixed parsing ASCII table with data that starts with a tilda. [#​17565]

  • Find and read ASCII tables even if there is white space before
    \begin{tabular}, \tablehead, and similar markers. [#​17624]

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

  • Fix memory leak in BinTableHDU.copy() [#​16143]

  • Fix overflow error with Numpy 2 and VLA columns using P format. [#​17328]

  • Fix ImageHDU.scale with float. [#​17458]

  • Fixed Table.write(..., format="fits", overwrite=True) when filename is
    provided as pathlib.Path. [#​17552]

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

  • Updated XML writer for VOTableFile element to include or drop
    coordinate_systems regardless of version. [[#​17356]

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