Create a set from a series in pandas

Question

I have a dataframe extracted from Kaggle's San Fransico Salaries: https://www.kaggle.com/kaggle/sf-salaries and I wish to create a set of the values of a column, for instance 'Status'.

This is what I have tried but it brings a list of all the records instead of the set (sf is how I name the data frame).

a=set(sf['Status']) print a 

According to this webpage, this should work. How to construct a set out of list items in python?

Answer 1

If you only need to get list of unique values, you can just use unique method. If you want to have Python's set, then do set(some_series)

In [1]: s = pd.Series([1, 2, 3, 1, 1, 4])  In [2]: s.unique() Out[2]: array([1, 2, 3, 4])  In [3]: set(s) Out[3]: {1, 2, 3, 4} 

However, if you have DataFrame, just select series out of it ( some_data_frame['<col_name>'] ).