Copied from exercism/exercism#272 reported by @BrianHicks

This is a placeholder issue for converting ruby/clojure exercises to Python.

(I'm thinking ruby/clojure since Python is a mix of OO and functional, depending on what's most appropriate)

• accumulate (not appropriate) (md, yml)
• anagram (md, yml)
• beer-song (md, yml)
• binary (md, yml)
• bob (md, yml)
• difference-of-squares (md, yml)
• etl (md, yml)
• gigasecond (md, yml)
• grade-school (md, yml)
• grains (md, yml)
• kindergarten-garden (md, yml)
• largest-series-product (md, yml)
• leap (md, yml)
• luhn (md, yml)
• matrix (md, yml)
• meetup (not appropriate) (md, yml)
• nth-prime (md, yml)
• nucleotide-count (md, yml)
• octal (md, yml)
• palindrome-products (md, yml)
• phone-number (md, yml)
• pig-latin (md, yml)
• point-mutations (md, yml)
• prime-factors (md, yml)
• raindrops (md, yml)
• rna-transcription (md, yml)
• robot-name (md, yml)
• roman-numerals (md, yml)
• scrabble-score (md, yml)
• series (md, yml)
• sieve (md, yml)
• space-age (md, yml)
• strain (not appropriate) (md, yml)
• sum-of-multiples (md, yml)
• triangle (md, yml)
• word-count (md, yml)
• allergies (md, yml)
• atbash-cipher (md, yml)
• bank-account (md, yml)
• binary-search (md, yml)
• binary-search-tree (md, yml)
• bottles (md, yml)
• clock (md, yml)
• crypto-square (md, yml)
• custom-set (md, yml)
• dot-dsl (md, yml)
• food-chain (md, yml)
• forth (md, yml)
• go-counting (md, yml)
• hamming (md, yml)
• hexadecimal (md, yml)
• house (md, yml)
• linked-list (md, yml)
• list-ops (md, yml)
• minesweeper (md, yml)
• ocr-numbers (md, yml)
• parallel-letter-frequency (md, yml)
• pascals-triangle (md, yml)
• proverb (md, yml)
• pythagorean-triplet (md, yml)
• queen-attack (md, yml)
• robot-simulator (md, yml)
• saddle-points (md, yml)
• say (md, yml)
• secret-handshake (md, yml)
• sgf-parsing (md, yml)
• simple-cipher (md, yml)
• simple-linked-list (md, yml)
• sublist (md, yml)
• trinary (md, yml)
• twelve-days (md, yml)
• wordy (md, yml)
• zipper (md, yml)