fail_for_dimension_mismatch

fail_for_dimension_mismatch#

class brainunit.math.fail_for_dimension_mismatch(obj1, obj2=None, error_message=None, **error_arrays)#

Compare the dimensions of two objects.

If the dimensions do not match a DimensionMismatchError is raised.

Parameters:

  • obj1 ({array-like, Quantity}) – The first object to compare.

  • obj2 ({array-like, Quantity}, optional) – The second object to compare. If None, assume it to be dimensionless.

  • error_message (str, optional) – An error message that is used in the DimensionMismatchError. May contain {name} placeholders that will be filled from error_arrays.

  • **error_arrays (dict mapping str to Quantity) – Arrays in this dictionary will be converted using the _short_str helper and inserted into error_message.

Returns:

  • dim1 (Dimension) – The physical dimension of obj1.

  • dim2 (Dimension) – The physical dimension of obj2 (or DIMENSIONLESS).

Raises:

DimensionMismatchError – If the dimensions of obj1 and obj2 do not match (or, if obj2 is None, when obj1 is not dimensionless).

Examples

>>> import saiunit as u
>>> d1, d2 = u.fail_for_dimension_mismatch(3.0 * u.volt, 5.0 * u.volt)
>>> d1 == d2
True