Different marker for columns

Hello, I want to make a plot. The dataframe final is consisted of two columns and I want to plot it with a different marker in one line. (i know how to do it in two lines)

I tried both
final.resample(‘D’).mean().plot( figsize=(12,9),ax=ax,marker=[‘.’, ‘^’])
final.resample(‘D’).mean().plot( figsize=(12,9),ax=ax,marker=[shape[i] for i in range(len(final.columns))])
and I got the error ValueError: Unrecognized marker style [‘.’, ‘^’]

So, I would like to ask how to do it in one line?