app.py

import streamlit as st
from datetime import date, timedelta
#from rest_api.fetch_data import (get_symbol_data)
import pandas as pd
from plots import (
    beta,
    basic_portfolio,
    # display_portfolio_return,
    display_heat_map,
    #circle_packing,
    ER,
    buble_interactive
)

### Koi
from ef import(
    ef_viz
)
####
def load_heading():
    """The function that displays the heading.
        Provides instructions to the user
    """
    with st.container():
        st.title('Dataminers')
        header = st.subheader('This App performs historical portfolio analysis and future analysis ')
        st.subheader('Please read the instructions carefully and enjoy!')
        # st.text('This is some text.')


def get_choices():
    """Prompts the dialog to get the All Choices.
    Returns:
        An object of choices and an object of combined dataframes.
    """
    choices = {}

    tickers = st.sidebar.text_input('Enter 4 stock symbols.', 'GOOG,A,AA,AMD')

    # Set the weights
    weights_str = st.sidebar.text_input('Enter The Investment Quantities', '50,30,25,25')
    # Set Initial Investment
    investment = st.sidebar.number_input('Enter The Initial Investment', min_value=5000, max_value=25000, value=5000)

    ### koi
    rf = st.sidebar.number_input('Enter The Current Rate of Risk Free Return', min_value=0.001, max_value=1.00, value=0.041)
    #A_coef_map = 
    A_coef = st.sidebar.slider('Enter The Coefficient of Risk Aversion', min_value=5, max_value=35, value=30, step=5)
    st.sidebar.write('Selected:', A_coef )
    ### 

    # Every form must have a submit button.
    submitted = st.sidebar.button("Submit")

    symbols = []
    reset = False

    # Reusable Error Button DRY!
    #def reset_app(error):
    #    st.sidebar.write(f"{error}!")
    #    st.sidebar.write(f"Check The Syntax")
    #    reset = st.sidebar.button("RESET APP")

    if submitted:
        # convert  strings to lists
        tickers_list = tickers.split(",")
        weights_list = weights_str.split(",")
        #crypto_symbols_list = crypto_symbols.split(",")
        # Create the Symbols List
        symbols.extend(tickers_list)
        #symbols.extend(crypto_symbols_list)
        # Convert Weights To Decimals
        weights = []
        for item in weights_list:
            weights.append(float(item))

        if reset:
        #    # Clears all singleton caches:
            tickers = st.sidebar.selectbox('Enter 11 stock symbols.', ('GOOG','D','AAP','BLK'))
        #    crypto_symbols = st.sidebar.text_input('Enter 2 crypto symbols only as below', 'BTC-USD,ETH-USD')
            weights_str = st.sidebar.text_input('Enter The Investment Weights', '0.3,0.3 ,0.3')

            st.experimental_singleton.clear()


        else:
            # Submit an object with choices
            choices = {

                'symbols': symbols,
                'weights': weights,
                'investment': investment,
                'risk-free-rate': rf,
                'A-coef': A_coef

            }
            # Load combined_df
            data = pd.read_csv('data_and_sp500.csv')
            combined_df = data[tickers_list]
            # return object of objects
            return {
                'choices': choices,
                'combined_df': combined_df,
                'data': data
            }


def run():
    """The main function for running the script."""

    load_heading()
    choices = get_choices()
    if choices:
        st.success('''** Selected Tickers **''')     
        buble_interactive(choices['data'],choices['choices'])
        st.header('Tickers Beta')
        """
        The Capital Asset Pricing Model (CAPM) utilizes a formula to enable the application to calculate
risk, return, and variability of return with respect to a benchmark. The application uses this
benchmark, currently S&P 500 annual rate of return, to calculate the return of a stock using
Figure 2 in Appendix A. Elements such as beta can be calculated using the formula in Appendix
A Figure 1. The beta variable will serve as a variable to be used for calculating the variability of
the stock with respect to the benchmark. This variability factor will prove useful for a variety of
calculations such as understanding market risk and return. If the beta is equal to 1.0, the stock
price is correlated with the market. When beta is smaller than 1.0, the stock is less volatile than
the market. If beta is greater than 1.0, the stock is more volatile than the market.
The CAPM model was run for 9 stocks, using 10-year daily historical data for initial test analysis.
With this initial analysis, beta was calculated to determine the stock’s risk by measuring the
price changes to the benchmark. By using CAPM model, annual expected return and portfolio
return is calculated. The model results can be found in Appendix A.
        """
        
        beta(choices['data'], choices['choices'])
        ER(choices['data'], choices['choices'])
        ##### EDIT HERE ##### koi
        st.header('CAPM Model and the Efficient Frontier')
        """
    CAPM model measures systematic risks, however many of it's functions has unrealistic assumptions and relies heavily on a linear interpretation 
    of the risks vs. returns relationship. It is better to use CAPM model in conjunction with the Efficient Frontier to better
    graphically depict volatility (a measure of investment risk) for the defined rate of return. \n
    Below we map the linear Utility function from the CAPM economic model along with the Efficient Frontier
    Each circle depicted above is a variation of the portfolio with the same input assest, only different weights. 
    Portfolios with higher volatilities has a yellower shade of hue, while portfolios with a higher return has a bigger radius. \n
    As you input different porfolio assets, take note of how diversification can improve a portfolio's risk versus reward profile.
        """
        ef_viz(choices['data'],choices['choices'])
        ##### #####
        basic_portfolio(choices['combined_df'])
        display_heat_map(choices['data'],choices['choices'])
        #display_portfolio_return(choices['combined_df'], choices['choices'])
        

if __name__ == "__main__":
    run()