A loop for stock charts

🎈 Using Streamlit
1

I have this code which plots year-to-date(YTD) candlestick chart for indices. The code is able to plot one index at a time. I’m unable to write a loop which will generate all 4 charts using one code without having to repeat the code for each index.

import streamlit as st
import yfinance as yf
import plotly.graph_objs as go

djia_symbol = “^DJI”

Fetch historical data for DJIA

data_dj = yf.download(djia_symbol, period=“ytd”, interval=“1d”)

Create a candlestick chart

fig = go.Figure(data=[go.Candlestick(
x=data_dj.index,
open=data_dj[‘Open’],
high=data_dj[‘High’],
low=data_dj[‘Low’],
close=data_dj[‘Close’],
name=“Candlesticks”,
)])

Set chart layout and title

fig.update_layout(
title=f’DJIA’,
xaxis_title=‘’,
yaxis_title=‘Price’,
xaxis_rangeslider_visible=False,
plot_bgcolor= ‘lightgray’,
width=300,
height=300
)
st.write(fig)

the indices are Dow Jones(^DJI), S&P 500(^GSPC), NASDAQ(^IXIC), NYSE Composite(^NYA)

anyone who can write a loop which can generate all the charts using one code?

2

Hey @Dennis!

Have you tried something? It seems like all filterings and charts are downstream of one variable called dija_symbol.

You could probably explore doing a for loop to execute this whole code for other symbols like "^GSPC" and so on, what do you think?

1 Like
3

Hi @Dennis ,
Once try this below code.I tried this code and it is working…

import streamlit as st
import yfinance as yf
import plotly.graph_objs as go

List of index symbols

index_symbols = [“^DJI”, “^GSPC”, “^IXIC”, “^NYA”]

Loop through the index symbols

for index_symbol in index_symbols:
# Fetch historical data for the current index
data = yf.download(index_symbol, period=“ytd”, interval=“1d”)

# Create a candlestick chart
fig = go.Figure(data=[go.Candlestick(
    x=data.index,
    open=data['Open'],
    high=data['High'],
    low=data['Low'],
    close=data['Close'],
    name="Candlesticks",
)])

# Set chart layout and title
fig.update_layout(
    title=f"{index_symbol} - Year-to-Date Candlestick Chart",
    xaxis_title='',
    yaxis_title='Price',
    xaxis_rangeslider_visible=False,
    plot_bgcolor='lightgray',
    width=800,
    height=600
)

# Display the chart using Streamlit
st.write(fig)
4

Hello krishna, I tried this code and it’s only printing one chart the last one only. Do you mind posting the screen shot of the code and another for the output please.

6

This worked thank you

7

Cool

8

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