Code:
>>> my = 'my name is david'
>>> import re
>>> re.findall('(.*)\s(.*)', my)
[('my name is', 'david')]
or
Code:
>>> my
'my name is david'
>>> lst = my.split(' ')
>>> lst
['my', 'name', 'is', 'david']
>>> result = []
>>> result.append(' '.join(lst[:-1]))
>>> result.append(lst[-1])
...