Merge pull request #9554 from simongreen-net/master

Simon's solution to challenge 255

1 files changed, 38 insertions, 0 deletions

diff --git a/challenge-255/sgreen/python/ch-2.py b/challenge-255/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..1a04788c22
--- /dev/null
+++ b/challenge-255/sgreen/python/ch-2.py
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+#!/usr/bin/env python3
+
+import re
+import sys
+
+
+def most_frequent_word(p: str, b: str) -> str:
+    """Find the most frequent word that isn't banned
+
+    Args:
+        p (str): The paragraph
+        b (str): The banned word
+
+    Returns:
+        str: The most frequent word
+    """
+
+    # Calculate the frequency of all the words
+    freq = {}
+    for word in re.findall(r"\w+(?:'\w+)?", p.lower()):
+        freq[word] = freq.get(word, 0) + 1
+
+    # Remove the bad word (if it exists)
+    freq.pop(b, None)
+
+    # Find the maximum occurrence of any word, and the word that has this
+    max_count = max(freq.values())
+    words = [k for k in freq if freq[k] == max_count]
+    return words[0]
+
+
+def main():
+    result = most_frequent_word(sys.argv[1], sys.argv[2])
+    print(result)
+
+
+if __name__ == '__main__':
+    main()