return count of unique values pandas

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Nelia
08 Oct 2016
1#TO count repetition of each unique values(to find How many times the same-
2# unique value is appearing in the data)
3
4item_counts = df["Your_Column"].value_counts()
5#Returns Dictionary => {"Value_name" : number_of_appearences} 
Javier
08 Jun 2016
1data = df.groupby('ColumnName')['IDColumnName'].nunique()
2print(data)
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