import math

Function to calculate investment

def investment_calculator():

Input deposit amount, interest rate, and years

deposit = float(input("Enter the amount of money you are depositing: "))
rate = float(input("Enter the interest rate (as a percentage): "))
years = int(input("Enter the number of years you plan on investing: "))

# Convert interest rate to decimal
rate /= 100

# Ask for interest type: simple or compound
interest_type = input("Do you want simple or compound interest? ").lower()

# Calculate total amount based on interest type
if interest_type == "simple":
    total_amount = deposit * (1 + rate * years)
elif interest_type == "compound":
    total_amount = deposit * math.pow((1 + rate), years)
else:
    print("Invalid interest type entered.")
    return

# Print the total amount after the given period
print("Total amount after {} years: {:.2f}".format(years, total_amount))

Function to calculate bond repayment

def bond_calculator():

Input present value, interest rate, and months

present_value = float(input("Enter the present value of the house: "))
rate = float(input("Enter the interest rate (as a percentage): "))
months = int(input("Enter the number of months for repayment: "))

# Convert interest rate to decimal and calculate monthly rate
rate /= 100
monthly_rate = rate / 12

# Calculate bond repayment amount
repayment = (monthly_rate * present_value) / (1 - math.pow((1 + monthly_rate), -months))

# Print the monthly repayment amount
print("Monthly repayment amount: {:.2f}".format(repayment))

Main function

def main():

Display menu

print("Welcome to the financial calculator!")
print("Menu:")
print("1. Investment - to calculate the amount of interest you'll earn on your investment")
print("2. Bond - to calculate the amount you'll have to pay on a home loan")

# Get user choice and convert to lowercase
option = input("Enter either 'investment' or 'bond' from the menu above to proceed: ").lower()

# Execute based on user choice
if option == "investment":
    investment_calculator()
elif option == "bond":
    bond_calculator()
else:
    print("Invalid option selected.")

Execute the main function

if name == "main": main()

OlonaMashalaba / Github