Dominique Leuenberger
452482f367
- Update to 7.1.0
## 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 Cutout2D,
overlap_slices, extract_array, and 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 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:
- https://asdf.readthedocs.io/en/latest/asdf/extending/converters.html#entry-point-performance-considerations
- gh#astropy/asdf-astropy#253 [#17685]
* 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 astropy/astropy#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 astropy/astropy#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]
OBS-URL: https://build.opensuse.org/request/show/1295333
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/python-astropy?expand=0&rev=63