add imports (Sourcery refactored)

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Pull Request #116 refactored by Sourcery.

If you're happy with these changes, merge this Pull Request using the Squash and merge strategy.

NOTE: As code is pushed to the original Pull Request, Sourcery will
re-run and update (force-push) this Pull Request with new refactorings as
necessary. If Sourcery finds no refactorings at any point, this Pull Request
will be closed automatically.

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Review changes via command line

To manually merge these changes, make sure you're on the import_test branch, then run:

git fetch origin sourcery-dev/import_test
git merge --ff-only FETCH_HEAD
git reset HEAD^

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Function GildedRose.update_quality refactored with the following changes:

• Simplify conditional into switch-like form (switch)
• Merge nested if conditions (merge-nested-ifs)
• Swap positions of nested conditionals (swap-nested-ifs)
• Remove redundant conditional (remove-redundant-if)
• Remove empty elif clause (remove-pass-elif)
• Replace multiple comparisons of same variable with in operator (merge-comparisons)
• Ensure first condition in if is positive (swap-if-else-branches)
• Split conditional into multiple branches (split-or-ifs)
• Hoist conditional out of nested conditional (hoist-if-from-if)
• Extract guard clause from elif block (guard)
• Hoist repeated code outside conditional statement (hoist-statement-from-if)
• Simplify numeric comparison (simplify-numeric-comparison)

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Sourcery Code Quality Report

✅  Merging this PR will increase code quality in the affected files by 6.68%.

Quality metrics	Before	After	Change
Complexity	52.76 ⛔	25.67 😞	-27.09 👍
Method Length	45.40 ⭐	45.00 ⭐	-0.40 👍
Working memory	7.94 🙂	7.80 🙂	-0.14 👍
Quality	47.38% 😞	54.06% 🙂	6.68% 👍

Other metrics	Before	After	Change
Lines	52	48	-4

Changed files	Quality Before	Quality After	Quality Change
gilded_rose_original.py	47.38% 😞	54.06% 🙂	6.68% 👍

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
gilded_rose_original.py	GildedRose.update_quality	35 ⛔	148 😞	9 🙂	39.13% 😞	Refactor to reduce nesting. Try splitting into smaller methods

Legend and Explanation

The emojis denote the absolute quality of the code:

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• 🙂 good
• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

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Please see our documentation here for details on how these metrics are calculated.

We are actively working on this report - lots more documentation and extra metrics to come!

Let us know what you think of it by mentioning @sourcery-ai in a comment.