application.py

"""
Python Flask Calculator Web Application
"""

# Imports
import math
from flask import Flask, render_template, request

# Initialise the Flask application
# You must use the word "application" for this to work in AWS
application = Flask(__name__)

# Add routes


@application.route("/")
def index():
    """
    Return the main calculator webpage
    """
    return render_template("index.html")


@application.route("/calculate", methods=["POST"])
def calculate():
    """
    Perform mathematical operations and return the result to
    the main calculator webpage
    """
    # Required values
    result = None
    operation = request.form["operation"]
    number_1 = float(request.form["number_1"])

    # Perform mathematical operations
    if operation == "custom_log_base":
        base = float(request.form["number_2"])
        result = math.log(number_1, base)

    return render_template("index.html", result=result)


# Run the Flask application
if __name__ == "__main__":
    application.debug = True
    application.run()