PlotlyLocalCredentialsError: Couldn't find a 'username', 'api-key' pair for you on your local machine. To sign in temporarily (until you stop running Python), run: >>> import plotly.plotly as py >>> py.sign_in('username', 'api_key') Even better, save your credentials permanently using the 'tools' module: >>> import plotly.tools as tls >>> tls.set_credentials_file(username='username', api_key='api-key') For more help, see https://plot.ly/python.