Code Editor for app.py

import streamlit as st
import pandas as pd

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

st.title('Penguins Data Viewer')

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

# Load the data
try:
    df = load_data(url)
    st.success('Data loaded successfully.')
except Exception as e:
    st.error(f'Error loading data: {e}')

if not df.empty:
    # Control for number of rows displayed
    num_rows = st.slider('Select number of rows to display:', 1, min(len(df), 100), 10)
    st.dataframe(df.head(num_rows))

    # Checkbox for shuffling the DataFrame
    shuffle = st.checkbox('Shuffle DataFrame?')
    if shuffle:
        df = df.sample(frac=1).reset_index(drop=True)

    # Select variables for visualization
    variable_options = df.columns.tolist()
    selected_vars = st.multiselect('Select one or two variables for visualization:', variable_options)

    if len(selected_vars) > 0:
        if len(selected_vars) == 1:
            st.subheader(f'Visualization of {selected_vars[0]}')
            st.bar_chart(df[selected_vars[0]].value_counts())
        elif len(selected_vars) == 2:
            st.subheader(f'Visualization of {selected_vars[0]} vs {selected_vars[1]}')
            st.scatter_chart(df, x=selected_vars[0], y=selected_vars[1])
        else:
            st.warning('Please select one or two variables only.')