---
files: [bank.py]
url: https://cdn.cs50.net/2022/fall/labs/6/bank/README.md
window: [terminal]
---

# Home Federal Savings Bank

{% video https://www.youtube.com/watch?v=IN6cJ_wGmsk %}

In [season 7, episode 24](https://en.wikipedia.org/wiki/The_Invitations) of [Seinfeld](https://en.wikipedia.org/wiki/Seinfeld), [Kramer](https://en.wikipedia.org/wiki/Cosmo_Kramer) visits a bank that promises to give $100 to anyone who isn't greeted with a "hello." Kramer is instead greeted with a "hey," which he insists isn't a "hello," and so he asks for $100. The bank's manager proposes a compromise: "You got a greeting that starts with an 'h,' how does $20 sound?" Kramer accepts.

In a file called `bank.py`, implement a program that prompts the user for a greeting. If the greeting starts with "hello", output `$0`. If the greeting starts with an "h" (but not "hello"), output `$20`. Otherwise, output `$100`. Ignore any leading whitespace in the user's greeting, and treat the user's greeting case-insensitively.

{% spoiler Hints %}
* Recall that a `str` comes with quite a few methods, per <https://docs.python.org/3/library/stdtypes.html#string-methods>.
* Be sure to give $0 not only for "hello" but also "hello there", "hello, Newman", and the like.
{% endspoiler %}

## Demo

<script async data-autoplay="1" data-cols="80" data-loop="1" data-rows="12" id="asciicast-Pes7djS4b1GmwpwqNu2vj6LgY" src="https://asc
iinema.org/a/Pes7djS4b1GmwpwqNu2vj6LgY.js"></script>

## How to Test

Here's how to test your code manually:

* Run your program with `python bank.py`. Type `Hello` and press Enter. Your program should output:
  ```
  $0 
  ```
* Run your program with `python bank.py`. Type `Hello, Newman` and press Enter. Your program should output: 
  ```
  $0
  ```
* Run your program with `python bank.py`. Type `How you doing?` and press Enter. Your program should output
  ```
  $20
  ```
* Run your program with `python bank.py`. Type `What's happening?` and press Enter. Your program should output
  ```
  $100
  ```

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/bank
```

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

No need to submit! This is a practice problem.