python: fix import for pypy

12 jobs for pr/244 in 22 minutes and 40 seconds (queued for 10 seconds)
Name Stage Failure
failed
robotpkg-py-hpp-fcl-buster Test
95% tests passed, 1 tests failed out of 21

Total Test time (real) = 98.85 sec

The following tests FAILED:
16 - gjk (Child aborted)
Errors while running CTest
make: *** [Makefile:110: test] Error 8
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
robotpkg-hpp-fcl-buster Test

Total Test time (real) = 71.63 sec

The following tests FAILED:
16 - gjk (Child aborted)
18 - serialization (Child aborted)
Errors while running CTest
make: *** [Makefile:110: test] Error 8
Cleaning up file based variables
ERROR: Job failed: exit code 1
failed
format Test
./python/hppfcl/viewer.py:55:17: E128 continuation line under-indented for visual indent
./python/hppfcl/viewer.py:55:95: E231 missing whitespace after ','
./python/hppfcl/viewer.py:55:97: E231 missing whitespace after ','
./python/hppfcl/viewer.py:55:120: E501 line too long (132 > 119 characters)
./python/hppfcl/viewer.py:58:1: E302 expected 2 blank lines, found 1
./python/hppfcl/viewer.py:77:21: E128 continuation line under-indented for visual indent
./python/hppfcl/viewer.py:77:65: E231 missing whitespace after ','
./python/hppfcl/viewer.py:77:67: E231 missing whitespace after ','
Cleaning up file based variables
ERROR: Job failed: exit code 1