using len() in Pandas dataframe

Question

This is the look of my DataFrame:

   StateAb    GivenNm    Surname                  PartyNm PartyAb  ElectedOrder
35      WA        Joe    BULLOCK            


        

Answer 1

The correct way to filter a DataFrame based on the length of strings in a column is

df[df['Surname'].str.len() > 9]

df['Surname'].str.len() creates a Series of lengths for the surname column and df[df['Surname'].str.len() > 9] filters out the ones less than or equal to 9. What you did is to check the length of the Series itself (how many rows it has).