How does the statement inside word_list work?
used_letters = ["a", "b", "d"]
word = ["a", "b", "d"]
word_list = [letter if letter in used_letters else '-' for letter in word]
print(word_list)
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Glacialyx
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It's called [list comprehension](https://www.programiz.com/python-programming/list-comprehension). – Phix Jun 07 '21 at 22:00
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Does this help? https://www.pythonforbeginners.com/basics/list-comprehensions-in-python – Sudheesh Singanamalla Jun 07 '21 at 22:00
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There's also a [conditional expression](https://stackoverflow.com/q/394809/4518341) in there. (@khelwood, you could add this to the duplicates list.) – wjandrea Jun 08 '21 at 01:20