cf.Constructs.key

Constructs.key(default=ValueError())[source]

Return the construct key of the sole metadata construct.

New in version 1.7.0.

See also

get, keys, value

Parameters:
default: optional

Return the value of the default parameter if there is not exactly one construct. If set to an Exception instance then it will be raised instead.
Returns:
str

The construct key.

Examples:

>>> print(c)
Constructs:
{'dimensioncoordinate0': <DimensionCoordinate: latitude(5) degrees_north>}
>>> c.key(
'dimensioncoordinate0'
>>> c.value()
<DimensionCoordinate: latitude(5) degrees_north>