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50 lines
2.5 KiB
Markdown
50 lines
2.5 KiB
Markdown
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# Hints
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## General
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- The Python Docs on [Control Flow Tools][control flow tools] and the Real Python tutorial on [conditionals][real python conditionals] are great places to start.
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- The Python Docs on [Boolean Operations][boolean operations] can be a great refresher on `bools`, as can the Real Python tutorial on [booleans][python booleans].
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- The Python Docs on [Comparisons][comparisons] and [comparisons examples][python comparisons examples] can be a great refresher for comparisons.
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## 1. Check for criticality
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- Comparison operators ([comparisons][comparisons review]) and boolean operations ([concept:python/bools]()) can be combined and used with conditionals.
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- Conditional expressions must evaluate to `True` or `False`.
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- `else` can be used for a code block that will execute when all conditional tests return `False`.
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```python
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>>> item = 'blue'
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>>> item_2 = 'green'
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>>> if len(item) >= 3 and len(item_2) < 5:
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print('Both pass the test!')
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elif len(item) >= 3 or len(item_2) < 5:
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print('One passes the test!')
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else:
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print('None pass the test!')
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...
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One passes the test!
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```
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## 2. Determine the Power output range
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- Comparison operators can be combined and used with conditionals.
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- Any number of `elif` statements can be used as decision "branches".
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- Each "branch" can have a separate `return`, although it might be considered "bad form" by linting tools.
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- If the linter complains, consider assigning the output of a branch to a common variable, and then `return`ing that variable.
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## 3. Fail Safe Mechanism
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- Comparison operators can be combined and used with conditionals.
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- Any number of `elif` statements can be used as decision "branches".
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- Each "branch" can have a separate `return`, although it might be considered "bad form" by linting tools.
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- If the linter complains, consider assigning the output of a branch to a common variable, and then `return`ing that variable.
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[boolean operations]: https://docs.python.org/3/library/stdtypes.html#boolean-operations-and-or-not
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[comparisons review]: https://www.learnpython.dev/02-introduction-to-python/090-boolean-logic/20-comparisons/
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[comparisons]: https://docs.python.org/3/library/stdtypes.html#comparisons
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[control flow tools]: https://docs.python.org/3/tutorial/controlflow.html
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[python booleans]: https://realpython.com/python-boolean/
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[python comparisons examples]: https://www.tutorialspoint.com/python/comparison_operators_example.htm
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[real python conditionals]: https://realpython.com/python-conditional-statements/
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