eliminateEmpty config

README.md

@@ -42,3 +42,7 @@ A set of elements with the score (-1, 5) would get filtered out, while a set wit
 ---
 
 `fullPrint` refers to whether it should print out the Symbol or the Name of the Element
+
+---
+
+`eliminateEmpty` refers to whether the program should remove specified elements if they contained no matching tuples.

config.json

@@ -123,5 +123,6 @@
     "reverseInnerOrder": false,
     "reverseOrder" : false,
     "noNegatives" : true,
-    "fullPrint" : true
+    "fullPrint" : true,
+    "eliminateEmpty" : false
 }

fusion.py

@@ -4,6 +4,9 @@ import os, sys, json, re, mendeleev as mdv
 path = os.path.join(sys.path[0], 'config.json')
 config = json.load(open(path, 'r'))
 
+# Constants
+noElements = '\t{No elements matched the configuration specified}'
+
 # Lambdas
 score = lambda element : config['elements'][str(element)]
 scoreSum = lambda item : ((score(item[0]) + score(item[1])), item)
@@ -48,16 +51,24 @@ def bestSelection(select):
     # Build the strings
     string1 = '[Best Elements for Element {}, {}]'.format(select, mdv.element(select).name if config['fullPrint'] else mdv.element(select.symbol))
     string2 = '\n'.join([formatting(element1, element2) for element1, element2 in posi])
-    return string1, string2 or '\t{No elements matched the configuration specified}'
+    return string1, string2 or noElements
 
 # Driver code
 def main():
     selection = input("Choose elements, delimited by whitespace and/or punctuation...\n")
     selection = [getElement(e) for e in selection.split()]
+    # No one:
+    # No one at all:
+    # Me:
     print('\n\n'.join(
-        sorted(['{}\n{}'.format(*bestSelection(E)) for E in selection],
+        map(
+            lambda item : '{}\n{}'.format(item[0], item[1]),
+            filter(
+                lambda item : (item[1] != noElements) if config['eliminateEmpty'] else True,
+                sorted([bestSelection(E) for E in selection],
                 # hacky solution for reverseOrder config option
-        key=lambda string : len([line for line in string.split('\n') if
+                key=lambda item : len(item[1]) if item[1] != noElements else 0,
-        '\t{No elements matched the configuration specified}' not in line]),
                 reverse=not config['reverseOrder'])
+            )
+        )
     ))