#using the insert function: df.insert(location, column_name, list_of_values)  #example df.insert(0, 'new_column', ['a','b','c']) #explanation: #put "new_column" as first column of the dataframe #and puts 'a','b' and 'c' as values  #using array-like access: df['new_column_name'] = value  #df stands for dataframe

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