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Home | Lecture 2 | Problem 2.1 | Problem 2.2 | Problem 2.3 | Problem 2.4 | Problem 2.5

Nutrition Facts

The U.S. Food & Drug Adminstration (FDA) offers downloadable/printable posters that “show nutrition information for the 20 most frequently consumed raw fruits … in the United States. Retail stores are welcome to download the posters, print, display and/or distribute them to consumers in close proximity to the relevant foods in the stores.”

In a file called nutrition.py, implement a program that prompts consumers users to input a fruit (case-insensitively) and then outputs the number of calories in one portion of that fruit, per the FDA’s poster for fruits, which is also available as text. Capitalization aside, assume that users will input fruits exactly as written in the poster (e.g., strawberries, not strawberry). Ignore any input that isn’t a fruit.

Hints

  • Rather than use a conditional with 20 Boolean expressions, one for each fruit, better to use a dict to associate a fruit with its calories!

  • If k is a str and d is a dict, you can check whether k is a key in d with code like:

      if k in d:
  	...

  • Take care to output the fruit’s calories, not calories from fat!

Before You Begin

From the root of your repository execute cd 2-Loops So your current working directory is ...

	/2-Loops $:

Next execute

	mkdir nutrition

to make a folder called nutrition in your codespace.

Then execute

	cd nutrition

to change directories into that folder. You should now see your terminal prompt as /2-Loops/nutrition $. You can now execute

	code nutrition.py

to make a file called nutrition.py where you’ll write your program.

How to Test

Here’s how to test your code manually:

  1. Run your program with python nutrition.py. Type Apple and press Enter. Your program should output:

     Calories: 130

  2. Run your program with python nutrition.py. Type Avocado and press Enter. Your program should output:

     Calories: 50

  3. Run your program with python nutrition.py. Type Sweet Cherries and press Enter. Your program should output

     Calories: 100

  4. Run your program with python nutrition.py. Type Tomato and press Enter. Your program should output nothing.

  5. Be sure to try other fruits and vary the casing of your input. Your program should behave as expected, case-insensitively.

Commit your program to GITHUB

At the /2-Loops/nutrition $ prompt in your terminal:

	git add -A

Add all changed files in the repository to be committed

	git commit -m “Upload completed nutrition.py“

Commit all changes in the REPO with the comment “Upload completed nutrition.py“ note: If the file is not complete, adjust the comment to describes what is being commited

	git push

Push all changes to the REPO