import base64
import pandas as pd
from IPython.display import HTML
def create_download_link( df, title = "Download CSV file", filename = "data.csv"):
csv = df.to_csv()
b64 = base64.b64encode(csv.encode())
payload = b64.decode()
html = '<a download="{filename}" href="data:text/csv;base64,{payload}" target="_blank">{title}</a>'
html = html.format(payload=payload,title=title,filename=filename)
return HTML(html)
df = pd.DataFrame(data = [[1,2],[3,4]], columns=['Col 1', 'Col 2'])
create_download_link(df)