### Representing physical quantities with MetroloPy

Source: https://nrc-cnrc.github.io/MetroloPy

Demonstrates creating gummy objects with uncertainty and units, performing arithmetic operations, and adjusting unit display settings.

```python
>>> import metrolopy as uc
>>> a = uc.gummy(1.2345,u=0.0234,unit='cm')
>>> a
1.234(23) cm

>>> b = uc.gummy(3.034,u=0.174,unit='mm')
>>> f = uc.gummy(uc.UniformDist(center=0.9345,half_width=0.096),unit='N')
>>> p = f/(a*b)
>>> p
2.50(21) N/cm2

>>> p.unit = 'kPa'
>>> p.uunit = '%'
>>> p
25.0 kPa ± 8.5%
```

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