Create a simple web-based calculator using Flask.

After completing this assignment, you should understand:

• The very basics of making a web application

After completing this assignment, you should be able to:

• Create a Flask app

• A Git repo called web-calculator containing at least:
  • README.md file explaining how to run your project
  • a requirements.txt file
  • a suite of tests for your project

• Passing unit tests
• No PEP8 or Pyflakes warnings or errors

Create a simple web application that works as a calculator. The first page, which you get via a GET request, should have a form with two text boxes, a dropdown box for the operation (+, -, *, /) and a button to calculate.

The form uses POST to go to a second screen which shows the results of your calculation.

In addition to the requirements from Normal Mode:

1. The form should also appear on the second page -- the calculation results page. The first operand should be filled in with the results of the previous calculation.

2. Add Foundation or Bootstrap to your application to make it look nicer.

• The main Flask site
• Explore Flask
• Full Stack Python