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Distance and Area objects to allow for sensible and convenient calculation
and conversions.
Authors: Robert Coup, Justin Bronn, Riccardo Di Virgilio
Inspired by GeoPy (https://github.com/geopy/geopy)
and Geoff Biggs' PhD work on dimensioned units for robotics.
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zMeasureBase.__imul__c C s | | S r r r+ r r r �__rmul__� s zMeasureBase.__rmul__c C sX t || j�r | j|j S t |t�r"| jdd| ji| j| j| i��S tddt| �i ��)Nr z2%(class)s must be divided with number or %(class)sr5 r )r r
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Return the unit value and the default units specified
from the given keyword arguments dictionary.
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Raise an exception if an attribute cannot be found.
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