Grocery List

Suppose that you’re in the habit of making a list of items you need from the grocery store.

In a file called grocery.py, implement a program that prompts the user for items, one per line, until the user inputs control-d (which is a common way of ending one’s input to a program). Then output the user’s grocery list in all uppercase, sorted alphabetically by item, prefixing each line with the number of times the user inputted that item. No need to pluralize the items. Treat the user’s input case-insensitively.

Hints

Note that you can detect when the user has inputted control-d by catching an EOFError with code like:
```
try:
    item = input()
except EOFError:
    ...
```
Odds are you’ll want to store your grocery list as a dict.
Note that a dict comes with quite a few methods, per docs.python.org/3/library/stdtypes.html#mapping-types-dict, among them get, and supports operations like:
```
d[key]
```
and
```
if key in d:
    ...
```
wherein d is a dict and key is a str.
Be sure to avoid or catch any KeyError.
Note that you can sort a dictionary’s keys alphabetically by passing that dictionary as an argument to sorted.

Demo

Before You Begin

Log into cs50.dev, click on your terminal window, and execute cd by itself. You should find that your terminal window’s prompt resembles the below:

Next execute

mkdir grocery

to make a folder called grocery in your codespace.

Then execute

cd grocery

to change directories into that folder. You should now see your terminal prompt as grocery/ $. You can now execute

code grocery.py

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

How to Test

Here’s how to test your code manually:

Run your program with python grocery.py. Type mango and press Enter, then type strawberry and press Enter, followed by control-d. Your program should output:
```
1 MANGO
1 STRAWBERRY
```
Run your program with python grocery.py. Type milk and press Enter, then type milk again and press Enter, followed by control-d. Your program should output:
```
2 MILK
```
Run your program with python grocery.py. Type tortilla and press Enter, then type sweet potato and press Enter, followed by control-d. Your program should output:
```
1 SWEET POTATO
1 TORTILLA
```

You can execute the below to check your code using check50, a program that CS50 will use to test your code when you submit. But be sure to test it yourself as well!

check50 cs50/problems/2022/python/grocery

Green smilies mean your program has passed a test! Red frownies will indicate your program output something unexpected. Visit the URL that check50 outputs to see the input check50 handed to your program, what output it expected, and what output your program actually gave.

How to Submit

In your terminal, execute the below to submit your work.

submit50 cs50/problems/2022/python/grocery