I have int type columns with dataframe.
I want to make a new column that will hold text representation of the row.
df['text'] = df[['project', 'from', 'to', 'score']].apply(lambda x: '_'.join(x), axis=1)
I am getting following error TypeError: ('sequence item 1: expected string or Unicode, int found', u'occurred at index 0')
How I can add casting to string with my text generation function ?
