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import pandas as pd

import pandas as pd

import pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)

all_data = pd.read_csv('/kaggle/input/data-science-salaries-2023/ds_salaries.csv')

all_data = all_data.drop('salary', axis=1)
all_data = all_data.drop('salary_currency', axis=1)
all_data = all_data.drop('employee_residence', axis=1)

all_data.nunique()

for columna in ['work_year', 'experience_level', 'employment_type', 'company_size', 'remote_ratio', 'job_title']:
    print(all_data[columna].unique())