Code Editor for app.py

import streamlit as st
import pandas as pd
import plotly.express as px

# Set default URL
DEFAULT_URL = 'https://raw.githubusercontent.com/mwaskom/seaborn-data/master/penguins.csv'

# Text input for URL
url = st.text_input('Enter URL of the CSV', value=DEFAULT_URL)

@st.cache_data
def load_data(url):
    return pd.read_csv(url)

# Load and display the DataFrame
try:
    df = load_data(url)
    st.write(df)
except Exception as e:
    st.error(f'Error loading data: {e}')

# Control for number of rows displayed
num_rows = st.number_input('Select number of rows to display', min_value=1, max_value=df.shape[0], value=10)
shuffled = st.checkbox('Shuffle DataFrame')

if shuffled:
    df = df.sample(frac=1).reset_index(drop=True)

st.dataframe(df.head(num_rows))

# Allow users to plot variables
st.subheader('Plotting options')
columns = df.columns.tolist()
var_x = st.selectbox('Select X variable', columns)
var_y = st.selectbox('Select Y variable (optional)', columns + [None])

if var_y:
    if st.button('Generate plot'):
        fig = px.scatter(df, x=var_x, y=var_y, title=f'Scatter plot of {var_x} vs {var_y}')
        st.plotly_chart(fig)
else:
    if st.button('Generate plot for single variable'):
        fig = px.histogram(df, x=var_x, title=f'Histogram of {var_x}')
        st.plotly_chart(fig)