HintsToday

Absolutely ✅ — here’s a full working FastAPI + Streamlit dashboard setup with a fallback method so your dashboard will always show data, even if the external API fails.

1️⃣ FastAPI (app.py) – Real-time + fallback

from fastapi import FastAPI
import requests

app = FastAPI()

@app.get("/bitcoin")
def get_bitcoin():
    """
    Fetch Bitcoin price from external API.
    If API fails (network issue, blocked, etc.), return fallback mock data.
    """
    try:
        # Primary API (CoinLore)
        r = requests.get("https://api.coinlore.net/api/ticker/?id=90", timeout=5)
        r.raise_for_status()
        data = r.json()
        return {"price": data[0]["price_usd"], "source": "CoinLore API"}
    except Exception:
        # Fallback mock data
        return {"price": 65000, "source": "mock fallback"}

Run FastAPI:

uvicorn app:app --reload --host 127.0.0.1 --port 8000

Check in browser:
http://127.0.0.1:8000/bitcoin

2️⃣ Streamlit Dashboard (dashboard.py) – Fetch + Display

import streamlit as st
import requests
import pandas as pd

st.title("Real-Time Data Dashboard")

# 1️⃣ Bitcoin Price
try:
    btc = requests.get("http://127.0.0.1:8000/bitcoin").json()
    st.subheader("Bitcoin Price")
    st.write(f"Price: ${btc['price']}  (Source: {btc['source']})")
except Exception as e:
    st.error(f"Could not fetch Bitcoin price: {e}")

# 2️⃣ Random Dog Image
try:
    dog = requests.get("https://dog.ceo/api/breeds/image/random").json()
    st.subheader("Random Dog")
    st.image(dog["message"], caption="Woof!", use_container_width=True)
except Exception as e:
    st.error(f"Could not fetch dog image: {e}")

# 3️⃣ COVID-19 Latest CSV Data
try:
    covid_url = "https://raw.githubusercontent.com/owid/covid-19-data/master/public/data/latest/owid-covid-latest.csv"
    df = pd.read_csv(covid_url)
    st.subheader("COVID-19 Latest Stats (Top 10 Rows)")
    st.dataframe(df.head(10))
    st.download_button("Download CSV", df.to_csv(index=False), "covid_data.csv")
except Exception as e:
    st.error(f"Could not fetch COVID data: {e}")

Run Streamlit:

streamlit run dashboard.py

Open in browser:
http://localhost:8501

✅ Notes:

1. FastAPI runs on 127.0.0.1:8000. Keep this terminal open.
2. Streamlit runs on localhost:8501. Keep in a separate terminal.
3. Fallback mechanism:
   • If the CoinLore API fails, FastAPI returns a fixed mock price.
   • Streamlit will display it seamlessly.
4. Other sources: Dog API and COVID CSV are public and should work without issues.

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