how to get distinct value in a column dataframe in python

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Claudio
11 Sep 2016
1df.column.unique()
Jazmín
09 May 2018
1note:df is syour dataframe 
2
3print(df['emp_title'].isnull().sum())
Cristóbal
18 Oct 2018
1df.iloc[1:3, 5:7]
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