defaults.py AttributeError: __repr__ references self.region.s

[pjhoberman]

It looks like the __repr__ function in defaults.py is referencing an attribute that no longer exists. Steps to reproduce below. Likely fix is just refactoring the return to use self.region.susceptible instead of self.region.s

from src.penn_chime.defaults import Constants, Regions, RateLos
delaware = 564696
chester = 519293
montgomery = 826075
bucks = 628341
philly = 1581000
DEFAULTS = Constants(
    # EDIT YOUR DEFAULTS HERE
    region=Regions(
        delaware=delaware,
        chester=chester,
        montgomery=montgomery,
        bucks=bucks,
        philly=philly),
    current_hospitalized=6,
    doubling_time=6,
    known_infected=157,
    n_days=60,
    market_share=0.15,
    relative_contact_rate=0,
    hospitalized=RateLos(0.05, 7),
    icu=RateLos(0.02, 9),
    ventilated=RateLos(0.01, 10),
)
DEFAULTS
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/core/formatters.py", line 224, in catch_format_error
    r = method(self, *args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/core/formatters.py", line 702, in __call__
    printer.pretty(obj)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/lib/pretty.py", line 394, in pretty
    return _repr_pprint(obj, self, cycle)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/IPython/lib/pretty.py", line 684, in _repr_pprint
    output = repr(obj)
  File "/Users/pjhoberman/Projects/chime/src/penn_chime/defaults.py", line 56, in __repr__
    return f"Constants(susceptible_default: {self.region.s}, known_infected: {self.known_infected})"
AttributeError: 'Regions' object has no attribute 's'
Out[5]: In[6]: DEFAULTS.n_days
Out[6]: 60
DEFAULTS.known_infected
Out[7]: 157