pages/data.dataframe.py

import streamlit as st
import pandas as pd
import numpy as np

@st.experimental_memo
def load_data():
    df = pd.DataFrame(np.random.randn(50, 20), columns=("col %d" % i for i in range(20)))
    return df

df = load_data()

st.dataframe(df)  # Same as st.write(df)