many fixes

arcovid19/cli.py

@@ -36,6 +36,11 @@
 
 DESCRIPTION = __doc__
 
+FOOTNOTES = """This software is under the BSD 3-Clause License.
+Copyright (c) 2020, IATE COVID-19 Task Force.
+For bug reporting or other instructions please check:
+https://github.com/ivco19/libs"""
+
 
 # =============================================================================
 # MAIN_
@@ -55,7 +60,7 @@ def cases(*, url=CASES_URL, force=False, out=None):
         If you want to ignore the local cache or retrieve a new value.
 
     """
-    cases = load_cases(url=url, force=force)
+    cases = load_cases(cases_url=url, force=force)
     if out is not None:
         cases.to_csv(out)
     else:

arcovid19/core.py

@@ -24,6 +24,7 @@
 # IMPORTS
 # =============================================================================
 
+import abc
 import logging
 
 import attr
@@ -41,10 +42,14 @@
 # =============================================================================
 
 @attr.s(repr=False)
-class Plotter:
+class Plotter(metaclass=abc.ABCMeta):
 
     cstats = attr.ib()
 
+    @abc.abstractproperty
+    def default_plot_name_method(self):
+        pass
+
     def __repr__(self):
         return f"CasesPlot({hex(id(self.cstats))})"
 
@@ -61,12 +66,16 @@ def __call__(self, plot_name=None, ax=None, **kwargs):
 
 
 @attr.s(repr=False)
-class Frame:
+class Frame(metaclass=abc.ABCMeta):
 
     df = attr.ib()
     extra = attr.ib(factory=dict)
     plot = attr.ib(init=False)
 
+    @abc.abstractproperty
+    def plot_cls(self):
+        pass
+
     @plot.default
     def _plot_default(self):
         plot_cls = self.plot_cls
@@ -84,7 +93,7 @@ def __getattr__(self, a):
         """x.__getattr__(y) <==> x.y
 
         Redirect all te missing calls first to extra and then
-        to the internal datadrame.
+        to the internal dataframe.
 
         """
         if a in self.extra: