oneross · April 15, 2020 23:48 · Apr 15, 2020
diff --git a/word_finder.py b/word_finder.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+
+# Function to print words which can be created using a given set of characters 
+# Inspired by https://www.geeksforgeeks.org/possible-words-using-given-characters-python/
+# Improved for use in an online puzzle by me!
+# CHANGE 2020-0415: Added click for argument handling, added comments.
+
+import click
+
+def possible_words(lwords, charSet): 
+    ## Build and return a list of good words
+    ## by iterating through every possible word
+    ## and adding it to the list if all of its characters
+    ## are in the character set.  
+    good_words = []
+    for word in lwords: 
+        word_chars_in_charSet = [(char in charSet) for char in word]
+        if all(word_chars_in_charSet):
+            good_words.append(word) 
+    return good_words
+
+@click.command()
+@click.argument('characters', required=False)
+def find_words(characters):
+    # if puzzle characters not passed via argument, 
+    # prompt for them, and then split into list of characters.
+    if not characters:
+        characters = click.prompt('Please enter characters from the puzzle, center character first')
+    charSet = [letter for letter in characters]
+
+    # Find all possible words from the nltk english corpus using the characters,
+    from nltk.corpus import words
+    pwords = possible_words(words.words(), charSet) 
+
+    # filter the list to only words containing the first (center) character and sort the list.
+    filtered_list = sorted([word for word in pwords if len(word) >= 4 and charSet[0] in word])
+
+    # Print the list with a navigation index, and highlights for long (high value) words.
+    for i in range(len(filtered_list)):
+        print(i,filtered_list[i],'*' if len(filtered_list[i]) >= 7 else '')   
+
+if __name__ == "__main__": 
+    find_words()
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