Iteratively Concatenate Columns In Pandas With Nan Values

I have a pandas.DataFrame data frame: import pandas as pd df = pd.DataFrame({'x': ['hello there you can go home now', 'why should she care', 'please sort me appropriately'],

Solution 1:

Option 1

pd.Series(df.fillna('').values.tolist()).str.join(' ')0                    hello there you can go home now  
1    why should she care finally we were able to go...
2    please sort me appropriately but what about me...
dtype:object

Option 2

df.fillna('').add(' ').sum(1).str.strip()0                      hello there you can go home now
1    why should she care finally we were able to go...
2    please sort me appropriately but what about me...
dtype:object

Solution 2:

Option 3

In[3061]: df.apply(lambda x: x.str.cat(sep=''), axis=1)
Out[3061]:
0hellothereyoucangohomenow1whyshouldshecarefinallywewereabletogo ...
2pleasesortmeappropriatelybutwhataboutmee...
dtype: object