Pandas dropna does not work as expected on a MultiIndex
For me this actually worked : 
df1=df1[pd.notnull(df1['Cloumn Name'])]
I have a Pandas DataFrame with a multiIndex. The index consists of a date and a text string. Some of the values are NaN and when I use dropna(), the row disappears as expected. However, when I look at the index using df.index, the dropped dates are still there. This is problematic as when I use the to_panel function, the dropped dates reappear.
Am I using dropna incorrectly or how can I resolve this?