What does the na_rep parameter mean?

Question

I am looking at cat () method

I can't figure out what na_rep is.

+3

Richard Rublev Apr 21 17 at 10:43

1 answer

jezrael · Accepted Answer · 2017-04-21T10:48:02+0000

When na_rep is None (default behavior), NaN values in the run are ignored.

Series(['a','b',np.nan,'c']).str.cat(sep=' ')  
'a b c'

Series(['a','b',np.nan,'c']).str.cat(sep=' ', na_rep='?')  
'a b ? c'