Python Excersize

#1- Create dataframe that is named as mydf using the Sample data: {'X':[78,85,96,80,86], 'Y':[84,94,89,83,86],'Z':[86,97,96,72,83]}.

What is the length of mydf in terms of rows?/ Get the columns in mydf as a list. /Get the index of mydf. / Replace the index of mydf with ['one','two','three','four','five']