Code Editor for app.py

import streamlit as st
import pandas as pd
import altair as alt

# Function to read data from URL and cache it
def read_data(url):
    return pd.read_csv(url)

st.title('Penguins Data Viewer')

url = st.text_input('Enter URL:',
                    value='https://raw.githubusercontent.com/mwaskom/seaborn-data/master/penguins.csv')

# Read and cache the data
@st.cache_data
def load_data(url):
    return read_data(url)

data = load_data(url)

if data is not None:
    # Control for number of rows displayed
    num_rows = st.slider('Select number of rows to display:', 1, min(len(data), 100), 10)
    st.write(data.head(num_rows))

    # Checkbox for random shuffling
    shuffle = st.checkbox('Shuffle DataFrame')
    if shuffle:
        data = data.sample(frac=1).reset_index(drop=True)
        st.write(data.head(num_rows))

    # Plotting section
    st.subheader('Plotting Variables')
    numeric_columns = data.select_dtypes(include=['float64', 'int64']).columns.tolist()
    x_var = st.selectbox('Select X variable:', numeric_columns)
    y_var = st.selectbox('Select Y variable (or leave blank for none):', [''] + numeric_columns)

    if y_var:
        chart = alt.Chart(data).mark_point().encode(
            x=x_var,
            y=y_var,
            tooltip=['species', x_var, y_var]
        ).interactive()
        st.altair_chart(chart, use_container_width=True)
    else:
        chart = alt.Chart(data).mark_bar().encode(
            x=x_var,
            y='count()'
        ).interactive()
        st.altair_chart(chart, use_container_width=True)