>>> a.split()
['commandlib', 'context', 'parser', 'resolver', 'task', 'tests']
>>> for i in a.split(): eval("import buildit.%s" % i)
...
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "<string>", line 1
    import buildit.commandlib
         ^
SyntaxError: invalid syntax
>>> import buildit.commandlib
>>>