pyparsing import cleaned up
pyparsing import cleaned up

An ImportError was being raised for pyparsing even if it was being
partly successfully imported which may have caused problems in other
places.

committer: Bob Farrell <48181acd22b3edaebc8a447868a7df7ce629920a@keys.(none)>

5monkeys/bpython,aktorion/bpython,kdart/bpython,wevial/bpython,wevial/bpython,aktorion/bpython,kdart/bpython