loading from stackoverflow.csv
Index(['Unnamed: 0', 'Age', 'Accessibility', 'EdLevel', 'Employment', 'Gender',
       'MentalHealth', 'MainBranch', 'YearsCode', 'YearsCodePro', 'Country',
       'PreviousSalary', 'HaveWorkedWith', 'ComputerSkills', 'Employed'],
      dtype='object')