improved docstrings.

src/arulespy/arules.py

@@ -350,5 +350,7 @@ def from_df(x, itemLabels = None):
 eclat.__doc__ = R_arules.eclat.__doc__
 
 def concat(list):
+    """Combining Association and Transaction Objects"""
+
     conc = methods.selectMethod("c", tuple(list[0].rclass)[0])
     return arules2py(conc(*list))

src/arulespy/arulesViz.py

@@ -1,6 +1,7 @@
 """The arules module provides an interface to R's arules package."""
 
 import rpy2.robjects.packages as packages
+from arulespy.arules import arules2py_decor
 
 ### activate automatic conversion of pandas dataframes to R dataframes
 #pandas2ri.activate()
@@ -9,14 +10,22 @@
 
 # get the generic for plot
 base = packages.importr('base')
-plot = base.plot
-#plot.__doc__ = R_arulesViz.plot.__doc__
+plot = arules2py_decor(base.plot)
+# we use the decorator so we can set docstrings, otherwise it would only show
+# the docstring for the plot generic.
+plot.__doc__ = """Visualize Association Rules and Itemsets
+
+plot(x, method = NULL, measure = "support", shading = "lift", limit = NULL, 
+    interactive = NULL, engine = "default", data = NULL, control = NULL, ...)
+    
+
+For details see https://mhahsler.r-universe.dev/arulesViz/doc/manual.html#plot
+"""
 
-### FIXME: Not quite sure why I cannot set __doc__ here
 inspectDT = R_arulesViz.inspectDT
-#inspectDT.__doc__ = R_arulesViz.inspectDT.__doc__
+# gets doc automatically inspectDT.__doc__ = R_arulesViz.inspectDT.__doc__
 
 def ruleExplorer(x, sidebarWidth = 2, graphHeight = '600px'):
      app = R_arulesViz.ruleExplorer(x, sidebarWidth = sidebarWidth, graphHeight = graphHeight)
      print(app)     
-#ruleExplorer.__doc__ = R_arulesViz.ruleExplorer.__doc__
+ruleExplorer.__doc__ = R_arulesViz.ruleExplorer.__doc__