Data Mining on data using pandas and series in Python?

Question

[Data_Image_Part_1]

[Data_Imagine_Part_2]

[Column names and index name (forgot to add in image part 1]
I am trying to figure out for this data set:

1. How to find the major of the students whose FIDN is 30?
   My idea: df_test.get_value(30, 'Major')
   but I do not know if this is correct

2. How can I sort all the students by their last name, then by their tuition amount?
   My idea: df_test.sort_values( ['LastName', 'tuition'] )
   but this does not work and outputs just the column names and index name:(

Answer 1

1. df_test[df_test["FIDN"] == 30]["Major"]
   OR: df_test.loc[df_test["FIDN"] == 30]["Major"]
   https://stackoverflow.com/a/17071908/9169359

2. df_test.sort_values(by=["LastName", "tuition"], ascending=False)
   https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.sort_values.html