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45 lines
2.5 KiB
Markdown
45 lines
2.5 KiB
Markdown
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# Hints
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[The Python comparisons tutorial][python comparisons tutorial] and [Python comparisons examples][python comparisons examples] are a great introduction covering the content of this exercise.
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## 1. Calculate the value of a card
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- You can use the equality comparison operator `==` to determine if a card is an ace card: `card == 'A'`.
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- You can use the containment operator `in` to determine if a substring is contained inside a string: `'Q' in 'KJQ'`.
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- You can use the [`int` constructor][int constructor] to convert a `str` of an `int` to an `int`: `int('13')`.
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## 2. Determine which card has a higher value
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- Once you have defined the `value_of_card` function, you can call it from other functions.
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- You can use the value comparison operators `>` and `<` to determine if specific cards are _greater than_ or _less than_ a given value: `3 < 12`.
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- You can use the equality comparison operator `==` to determine if two values are equal to one another.
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## 3. Calculate the value of an ace
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- Once you have defined the `value_of_card` function, you can call it from other functions.
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- You can use the order comparison operator `>` to decide the appropriate course of action here.
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## 4. Determine Blackjack
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- Remember, you can use the [`if`/`elif`/`else` syntax][if syntax] to handle different combinations of cards.
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- You can chain BOTH comparison operators and boolean operators _arbitrarily_: `y < z < x` or `(y or z) and (x or z)`
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- You can reuse the already implemented `value_of_card` function.
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## 5. Splitting pairs
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- You can reuse the already implemented `value_of_card` function.
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- You can handle the `A` case (when at least one of the cards in an ace) separately.
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## 6. Doubling down
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- An `A` scored at 11 will never allow doubling down if there are two cards in the hand.
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- Given the first point, you _should_ be able to reuse the already implemented `value_of_card` function.
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- You can chain comparison operators _arbitrarily_: `y < z < x`.
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- You can use the [conditional expression][conditional expression] (_sometimes called a "ternary operator"_)
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to shorten simple `if`/`else` statements: `13 if letter == 'M' else 3`.
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[conditional expression]: https://docs.python.org/3/reference/expressions.html#conditional-expressions
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[if syntax]: https://docs.python.org/3/tutorial/controlflow.html#if-statements
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[int constructor]: https://docs.python.org/3/library/functions.html#int
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[python comparisons examples]: https://www.tutorialspoint.com/python/comparison_operators_example.htm
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[python comparisons tutorial]: https://docs.python.org/3/reference/expressions.html#comparisons
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