Reference/API#

astropy.io.misc Package#

This package contains miscellaneous utility functions for data input/output with astropy.

Functions#

fnpickle(object, fileorname[, protocol, append])

fnunpickle(fileorname[, number])

astropy.io.misc.hdf5 Module#

This package contains functions for reading and writing HDF5 tables that are not meant to be used directly, but instead are available as readers/writers in astropy.table. See Unified File Read/Write Interface for more details.

Functions#

read_table_hdf5(input[, path, ...])

Read a Table object from an HDF5 file.

write_table_hdf5(table, output[, path, ...])

Write a Table object to an HDF5 file.

astropy.io.misc.yaml Module#

Functions for serializing astropy objects to YAML.

It provides functions dump, load, and load_all which call the corresponding functions in PyYaml but use the AstropyDumper and AstropyLoader classes to define custom YAML tags for the following astropy classes: - astropy.units.Unit - astropy.units.Quantity - astropy.time.Time - astropy.time.TimeDelta - astropy.coordinates.SkyCoord - astropy.coordinates.Angle - astropy.coordinates.Latitude - astropy.coordinates.Longitude - astropy.coordinates.EarthLocation - astropy.table.SerializedColumn

Examples#

>>> from astropy.io.misc import yaml
>>> import astropy.units as u
>>> from astropy.time import Time
>>> from astropy.coordinates import EarthLocation
>>> t = Time(2457389.0, format='mjd',
...          location=EarthLocation(1000, 2000, 3000, unit=u.km))
>>> td = yaml.dump(t)
>>> print(td)
!astropy.time.Time
format: mjd
in_subfmt: '*'
jd1: 4857390.0
jd2: -0.5
location: !astropy.coordinates.earth.EarthLocation
ellipsoid: WGS84
x: !astropy.units.Quantity
    unit: &id001 !astropy.units.Unit {unit: km}
    value: 1000.0
y: !astropy.units.Quantity
    unit: *id001
    value: 2000.0
z: !astropy.units.Quantity
    unit: *id001
    value: 3000.0
out_subfmt: '*'
precision: 3
scale: utc
>>> ty = yaml.load(td)
>>> ty
<Time object: scale='utc' format='mjd' value=2457389.0>
>>> ty.location  
<EarthLocation (1000., 2000., 3000.) km>

Functions#

load(stream)

Parse the first YAML document in a stream using the AstropyLoader and produce the corresponding Python object.

load_all(stream)

Parse the all YAML documents in a stream using the AstropyLoader class and produce the corresponding Python object.

dump(data[, stream])

Serialize a Python object into a YAML stream using the AstropyDumper class.

Classes#

AstropyLoader(stream)

Custom SafeLoader that constructs astropy core objects as well as Python tuple and unicode objects.

AstropyDumper(stream[, default_style, ...])

Custom SafeDumper that represents astropy core objects as well as Python tuple and unicode objects.

Class Inheritance Diagram#

Inheritance diagram of astropy.io.misc.yaml.AstropyLoader, astropy.io.misc.yaml.AstropyDumper

astropy.io.misc.parquet Module#

This package contains functions for reading and writing Parquet tables that are not meant to be used directly, but instead are available as readers/writers in astropy.table. See Unified File Read/Write Interface for more details.