UnrecognizedUnit

class astropy.units.UnrecognizedUnit(st, doc=None, format=None, namespace=None)

Bases: astropy.units.IrreducibleUnit

A unit that did not parse correctly. This allows for round-tripping it as a string, but no unit operations actually work on it.

Parameters

ststr

The name of the unit.

Methods Summary

get_format_name(self, format)	Get a name for this unit that is specific to a particular format.
is_equivalent(self, other[, equivalencies])	Returns True if this unit is equivalent to other.
is_unity(self)	Returns True if the unit is unscaled and dimensionless.
to_string(self[, format])	Output the unit in the given format as a string.

Methods Documentation

get_format_name(self, format)

Get a name for this unit that is specific to a particular format.

Uses the dictionary passed into the format kwarg in the constructor.

Parameters

formatstr

The name of the format

Returns

namestr

The name of the unit for the given format.

is_equivalent(self, other, equivalencies=None)

Returns True if this unit is equivalent to other.

Parameters

otherunit object or string or tuple

The unit to convert to. If a tuple of units is specified, this method returns true if the unit matches any of those in the tuple.

equivalencieslist of equivalence pairs, optional

A list of equivalence pairs to try if the units are not directly convertible. See Equivalencies. This list is in addition to possible global defaults set by, e.g., set_enabled_equivalencies. Use None to turn off all equivalencies.

Returns

bool

is_unity(self)

Returns True if the unit is unscaled and dimensionless.

to_string(self, format=None)

Output the unit in the given format as a string.

Parameters

formatastropy.units.format.Base instance or str

The name of a format or a formatter object. If not provided, defaults to the generic format.